# Hardware & Hand Tools — B2B Industrial Specification Monograph | Newtech Sources Co., Ltd.

> Drop-forged alloy steel wrenches, bi-metal cutting tools, masonry hand tools, and job-site hardware accessories built for industrial distributors.

## 1. Category Procurement & Engineering Summary
- **Manufacturer**: Newtech Sources Co., Ltd. (Founded 1998, Guangzhou, China · Tax ID / USCC: 914401067124673119)
- **Canonical Category Hub**: https://newtech-sources.com/products/category/hardware-hand-tools
- **Active Series in Category**: 43 published industrial product series
- **Engineering Tolerance Benchmark**: Process-matched to buyer engineering drawings with 100% pre-shipment dimensional and functional inspection
- **OEM / ODM Policy**: Process-by-requirement custom dimensions, alloy/bond formulation, laser marking, and private-label packaging
- **Quality Verification**: 100% Pre-Shipment Dimensional & Visual Inspection prior to dispatch
- **Port of Loading**: Flexible FOB & mixed-container consolidation from any port in China
- **Direct RFQ Endpoint**: https://newtech-sources.com/contact | Email: sales@newtech-sources.com
- **Parent Summary Index**: https://newtech-sources.com/llms.txt

## 2. Quick Comparison Matrix

| Model / SKU | Product Series | Dimensional / Key Summary | MOQ | Canonical URL |
| --- | --- | --- | --- | --- |
| NT-HWT-101 | High-Tension Bi-Metal Hacksaw Frame & Masonry Cutting Hand Tool Kit | 300mm (12") Frame + 3 Bi-Metal Blades to 300mm (12") Frame + Masonry Chisel Set (300mm (12") Frame + 3 Bi-Metal Blades, 300mm (12") Frame + Masonry Chisel Set) | 200 Sets | https://newtech-sources.com/products/high-tension-bi-metal-hacksaw-masonry-hand-tool-kit |
| NT-DRL-116 | SDS-Plus & SDS-Max Cross-Head (4-Cutter) Heavy-Duty Rotary Hammer Drill Bit | 6.0mm (15/64") to 450mm (17-3/4") (6.0mm (15/64"), 160mm (6-5/16"), 8.0mm (5/16"), 10.0mm (25/64"), 210mm (8-1/4"), 12.0mm (15/32"), …) | 100 Pcs | https://newtech-sources.com/products/sds-plus-sds-max-cross-head-rotary-hammer-drill-bit |
| NT-HLS-101 | M42 8% Cobalt Bi-Metal Variable-Pitch (4/6 TPI) Heavy-Duty Hole Saw | 22mm (7/8") to 102mm (4") (22mm (7/8"), 35mm (1-3/8"), 51mm (2"), 76mm (3"), 102mm (4")) | 100 Pcs | https://newtech-sources.com/products/m42-8-percent-cobalt-bi-metal-hole-saw-heavy-duty |
| NT-DRL-115 | DIN 8039 Tungsten Carbide Tipped (TCT) Masonry & Concrete Impact Drill Bit | 5.0mm (3/16") to 12.0mm (15/32") (5.0mm (3/16"), 85mm (3-3/8"), 6.0mm (15/64"), 100mm (4"), 8.0mm (5/16"), 120mm (4-3/4"), …) | 200 Pcs | https://newtech-sources.com/products/din8039-tungsten-carbide-tipped-masonry-impact-drill-bit |
| NT-DRL-110 | HSS Silver & Deming 1/2" (12.7mm) Reduced Shank Drill Bit | 9/16" (14.29mm) to 1" (25.40mm) (9/16" (14.29mm), 6" (152mm), 5/8" (15.88mm), 3/4" (19.05mm), 7/8" (22.23mm), 1" (25.40mm)) | 100 Pcs | https://newtech-sources.com/products/hss-silver-and-deming-reduced-shank-drill-bit-half-inch |
| NT-DRL-102 | ASME B94.11M HSS Jobber Length Straight Shank Twist Drill Bit | 1/8" (3.18mm) to 4-1/2" (114mm) (1/8" (3.18mm), 2-3/4" (70mm), 1-7/16" (37mm), 3/16" (4.76mm), 3-1/2" (89mm), 2-5/16" (59mm), …) | 200 Pcs | https://newtech-sources.com/products/asme-b94-11m-hss-jobber-length-straight-shank-twist-drill |
| NT-DRL-101 | DIN 338 Fully Ground HSS Twist Drill Bit (Bright Finish) | 3.0mm (1/8") to 101mm (4") (3.0mm (1/8"), 61mm (2-3/8"), 33mm (1-5/16"), 5.0mm (13/64"), 86mm (3-3/8"), 52mm (2-1/16"), …) | 200 Pcs | https://newtech-sources.com/products/din338-fully-ground-hss-twist-drill-bit-bright-finish |
| NT-DRL-107 | DIN 345 Morse Taper Shank (MT1–MT5) Heavy-Duty HSS Drill Bit | 14.0mm (35/64") to 200mm (7-7/8") (14.0mm (35/64"), 189mm (7-7/16"), 108mm (4-1/4"), 20.0mm (25/32"), 238mm (9-3/8"), 140mm (5-1/2"), …) | 50 Pcs | https://newtech-sources.com/products/din345-morse-taper-shank-heavy-duty-hss-drill-bit |
| NT-HLS-112 | TCT Tungsten Carbide Tipped Heavy-Duty Metal & Stainless Steel Hole Saw | 22mm (7/8") to 75mm (3") (22mm (7/8"), 30mm (1-3/16"), 35mm (1-3/8"), 50mm (2"), 75mm (3")) | 100 Pcs | https://newtech-sources.com/products/tct-carbide-tipped-metal-stainless-steel-hole-saw |
| NT-DRL-103 | DIN 1897 HSS Stubby (Short Flute) Drill Bit for Sheet Metal & Automotive | 3.0mm (1/8") to 37mm (1-7/16") (3.0mm (1/8"), 46mm (1-13/16"), 16mm (5/8"), 4.0mm (5/32"), 55mm (2-3/16"), 22mm (7/8"), …) | 300 Pcs | https://newtech-sources.com/products/din1897-hss-stubby-drill-bit-for-sheet-metal-and-automotive |
| NT-DRL-109 | HSS Double-Ended Sheet Metal & Rivet Hole Drill Bit | 3.2mm (1/8") to 17mm (11/16") each end (3.2mm (1/8"), 49mm (1-15/16"), 11mm (7/16") each end, 4.0mm (5/32"), 55mm (2-3/16"), 14mm (9/16") each end, …) | 500 Pcs | https://newtech-sources.com/products/hss-double-ended-sheet-metal-rivet-drill-bit |
| NT-WBR-101 | Brass-Coated Crimped High-Tensile Steel Wire Cup Brush for Angle Grinders | 65mm (2-1/2") to 125mm (5") (65mm (2-1/2"), 75mm (3"), 100mm (4"), 125mm (5")) | 200 Pcs | https://newtech-sources.com/products/brass-coated-crimped-wire-cup-brush-angle-grinder |
| NT-HLS-106 | Integrated Bi-Metal Hole Saw with Welded Hex Shank & Ejection Spring | 20mm (25/32") to 50mm (2") (20mm (25/32"), 25mm (1"), 32mm (1-1/4"), 50mm (2")) | 150 Pcs | https://newtech-sources.com/products/integrated-bi-metal-hole-saw-with-welded-hex-shank |
| NT-DRL-113 | 1/4" Quick-Change Hex Shank Brad Point Drill Bit for Wood | 4.0mm (5/32") to 120mm (4-3/4") (4.0mm (5/32"), 85mm (3-3/8"), 6.0mm (15/64"), 95mm (3-3/4"), 8.0mm (5/16"), 105mm (4-1/8"), …) | 300 Pcs | https://newtech-sources.com/products/quick-change-hex-shank-woodworking-brad-point-drill-bit |
| NT-DRL-112 | 1/4" Quick-Change Hex Shank HSS Impact Drill Bit for Metal | 3.0mm (1/8") to 133mm (5-1/4") (3.0mm (1/8"), 80mm (3-1/8"), 4.5mm (11/64"), 95mm (3-3/4"), 6.5mm (1/4"), 105mm (4-1/8"), …) | 300 Pcs | https://newtech-sources.com/products/quick-change-hex-shank-impact-drill-bit-for-metal |
| NT-HLS-108 | High-Carbon Steel (HCS) Wood, Drywall & PVC Hole Saw Cutter | 51mm (2") to 127mm (5") (51mm (2"), 64mm (2-1/2"), 76mm (3"), 102mm (4"), 127mm (5")) | 300 Pcs | https://newtech-sources.com/products/high-carbon-steel-wood-drywall-hole-saw-cutter |
| NT-WBR-106 | Bench Grinder Narrow-Face Crimped Steel Wire Wheel Brush | 150mm (6") to 200mm (8") (150mm (6"), 200mm (8")) | 100 Pcs | https://newtech-sources.com/products/bench-grinder-narrow-crimped-wire-wheel-brush |
| NT-WBR-102 | Heavy-Duty Knotted (Twisted) High-Carbon Steel Wire Cup Brush | 65mm (2-1/2") to 125mm (5") (65mm (2-1/2"), 75mm (3"), 100mm (4"), 125mm (5")) | 150 Pcs | https://newtech-sources.com/products/heavy-duty-knotted-twist-steel-wire-cup-brush |
| NT-HLS-113 | TCT Tungsten Carbide Tipped Woodworking & Heavy Timber Hole Saw | 51mm (2") to 102mm (4") (51mm (2"), 64mm (2-1/2"), 76mm (3"), 102mm (4")) | 100 Pcs | https://newtech-sources.com/products/tct-carbide-tipped-woodworking-and-timber-hole-saw |
| NT-HLS-110 | Integrated High-Carbon Steel Hole Saw with Fixed Round Shank | 32mm (1-1/4") to 76mm (3") (32mm (1-1/4"), 51mm (2"), 64mm (2-1/2"), 76mm (3")) | 200 Pcs | https://newtech-sources.com/products/integrated-carbon-steel-woodworking-hole-saw |
| NT-HLS-109 | Industrial Hole Saw Quick-Lock Arbors, Mandrels & HSS Pilot Bits | Heavy-duty hole saw arbor mandrels featuring hardened alloy steel drive pin | 100 Pcs | https://newtech-sources.com/products/hole-saw-quick-lock-arbors-mandrels-pilot-drills |
| NT-HLS-107 | Sheet Metal Thin-Gauge Bi-Metal Hole Saw with Safety Depth Stop Collar | 20.4mm (M20 Electrical / 13/16") to 40.5mm (M40 Electrical / 1-19/32") (20.4mm (M20 Electrical / 13/16"), 25.4mm (M25 Electrical / 1"), 32.5mm (M32 Electrical / 1-9/32"), 40.5mm (M40 Electrical / 1-19/32")) | 150 Pcs | https://newtech-sources.com/products/sheet-metal-thin-gauge-bi-metal-hole-saw-with-depth-stop |
| NT-DRL-105 | DIN 340 HSS Long-Length Straight Shank Twist Drill Bit | 4.0mm (5/32") to 121mm (4-3/4") (4.0mm (5/32"), 119mm (4-11/16"), 78mm (3-1/16"), 6.0mm (15/64"), 139mm (5-1/2"), 91mm (3-9/16"), …) | 100 Pcs | https://newtech-sources.com/products/din340-hss-long-length-straight-shank-twist-drill-bit |
| NT-DRL-111 | HSS Aircraft Extension Drill Bit (6" & 12" Long Reach) | 1/8" (3.18mm) to 3-5/8" (92mm) (1/8" (3.18mm), 1-7/16" (37mm), 3/16" (4.76mm), 2-5/16" (59mm), 1/4" (6.35mm), 2-3/4" (70mm), …) | 150 Pcs | https://newtech-sources.com/products/hss-aircraft-extension-drill-bit-6-inch-12-inch |
| NT-DRL-114 | Professional Chrome-Vanadium Woodworking Brad Point Drill Bit Series | 5.0mm (13/64") to 101mm (4") (5.0mm (13/64"), 85mm (3-3/8"), 52mm (2-1/16"), 8.0mm (5/16"), 117mm (4-5/8"), 75mm (2-15/16"), …) | 200 Pcs | https://newtech-sources.com/products/professional-woodworking-brad-point-drill-bit-set |
| NT-WBR-108 | Pipeline Stringer Bead Heavy-Duty Knotted Twist Wire Wheel Brush | 115mm (4-1/2") to 178mm (7") (115mm (4-1/2"), 125mm (5"), 178mm (7")) | 150 Pcs | https://newtech-sources.com/products/pipeline-stringer-bead-knotted-wire-wheel-brush |
| NT-DRL-108 | DIN 341 Extra-Long Morse Taper Shank Heavy-Duty HSS Drill Bit | 15.0mm (19/32") to 220mm (8-11/16") (15.0mm (19/32"), 267mm (10-1/2"), 160mm (6-5/16"), 20.0mm (25/32"), 294mm (11-9/16"), 181mm (7-1/8"), …) | 30 Pcs | https://newtech-sources.com/products/din341-extra-long-morse-taper-shank-hss-drill-bit |
| NT-DRL-104 | ASME B94.11M Screw Machine Length Stubby HSS Drill Bit | 1/8" (3.18mm) to 1-13/16" (46mm) (1/8" (3.18mm), 1-7/8" (48mm), 7/8" (22mm), 1/4" (6.35mm), 2-1/2" (64mm), 1-3/8" (35mm), …) | 300 Pcs | https://newtech-sources.com/products/asme-b94-11m-screw-machine-length-stubby-drill-bit |
| NT-DRL-106 | ASME B94.11M Taper Length Straight Shank HSS Drill Bit | 1/4" (6.35mm) to 5-1/4" (133mm) (1/4" (6.35mm), 5-1/8" (130mm), 3-3/8" (86mm), 3/8" (9.53mm), 6-1/4" (159mm), 4-1/4" (108mm), …) | 150 Pcs | https://newtech-sources.com/products/asme-b94-11m-taper-length-straight-shank-hss-drill |
| NT-HLS-102 | 9-Piece M42 Bi-Metal Hole Saw Set for Electricians & Plumbers | 6 Saws (19–57mm) + 2 Arbors + 1 Adapter | 50 Sets | https://newtech-sources.com/products/9-piece-m42-bi-metal-hole-saw-set-electrician-plumber |
| NT-HLS-111 | Multi-Blade 7-in-1 Concentric Nest Hole Saw Cutter Set | 7 Blades (25–63mm) + Aluminum Disc Base | 200 Sets | https://newtech-sources.com/products/multi-blade-7-in-1-concentric-nest-hole-saw-cutter |
| NT-HWT-102 | Drop-Forged Chrome-Vanadium Heavy-Duty Adjustable & Pipe Wrench Series | 200mm (8.0") Length to 300mm (12.0") Length (200mm (8.0") Length, 250mm (10.0") Length, 300mm (12.0") Length) | 200 Pieces | https://newtech-sources.com/products/drop-forged-chrome-vanadium-adjustable-pipe-wrench-series |
| NT-WBR-103 | Heavy-Duty Knotted Wire Cup Brush with Removable Bridle (Restraining Ring) | 75mm (3") with Bridle to 125mm (5") with Bridle (75mm (3") with Bridle, 100mm (4") with Bridle, 125mm (5") with Bridle) | 150 Pcs | https://newtech-sources.com/products/knotted-wire-cup-brush-with-removable-bridle-ring |
| NT-WBR-105 | Industrial Conical Bevel (Saucer) Wire Brush for Fillet Welds & Edges | 100mm (4") Knotted to 125mm (5") Crimped (100mm (4") Knotted, 115mm (4-1/2") Knotted, 125mm (5") Crimped) | 150 Pcs | https://newtech-sources.com/products/industrial-bevel-saucer-wire-brush-for-fillet-welds |
| NT-WBR-109 | Standard Heavy-Duty Knotted Twist Steel Wire Circular Wheel Brush | 115mm (4-1/2") to 178mm (7") (115mm (4-1/2"), 125mm (5"), 178mm (7")) | 150 Pcs | https://newtech-sources.com/products/standard-heavy-duty-knotted-twist-wire-wheel-brush |
| NT-WBR-111 | Industrial Solid Wire End Brush (Crimped & Knotted Styles) for Die Grinders | 19mm (3/4") Crimped to 25mm (1") Knotted Twist (19mm (3/4") Crimped, 25mm (1") Knotted Twist) | 300 Pcs | https://newtech-sources.com/products/industrial-solid-wire-end-brush-crimped-and-knotted |
| NT-WBR-107 | Wide-Face Multi-Section Heavy-Duty Crimped Wire Wheel Brush | 150mm (6") to 200mm (8") (150mm (6"), 200mm (8")) | 80 Pcs | https://newtech-sources.com/products/wide-face-heavy-duty-crimped-wire-wheel-brush |
| NT-WBR-104 | 1/4" (6.35mm) Shank-Mounted Crimped Wire Cup Brush for Power Drills | 50mm (2") to 75mm (3") (50mm (2"), 75mm (3")) | 300 Pcs | https://newtech-sources.com/products/shank-mounted-crimped-wire-cup-brush-for-drills |
| NT-WBR-110 | 1/4" (6.35mm) Shank-Mounted Crimped Wire Wheel Brush for Die Grinders | 50mm (2") to 75mm (3") (50mm (2"), 75mm (3")) | 300 Pcs | https://newtech-sources.com/products/shank-mounted-crimped-wire-wheel-brush-for-die-grinders |
| NT-WBR-112 | Silicon Carbide (SiC) Abrasive Nylon Filament Cup & Wheel Brush Series | 75mm (3") to 100mm (4") (75mm (3"), 100mm (4")) | 150 Pcs | https://newtech-sources.com/products/silicon-carbide-abrasive-nylon-cup-and-wheel-brush |
| NT-HLS-105 | 13-Piece Master M42 Bi-Metal Hole Saw Complete Industrial Case Set | 9 Saws + Complete Accessories in Industrial Case | 40 Sets | https://newtech-sources.com/products/13-piece-master-m42-bi-metal-hole-saw-case-set |
| NT-HLS-103 | 10-Piece M42 Bi-Metal Hole Saw Contractor Kit with Ejection Springs | 6 Saws (22–64mm) + Complete Accessories | 50 Sets | https://newtech-sources.com/products/10-piece-m42-bi-metal-hole-saw-contractor-kit |
| NT-HLS-104 | 12-Piece M42 Bi-Metal Hole Saw Master Technician Assortment Set | 8 Saws (19–76mm) + 2 Arbors + Spare Drill + Hex Key | 40 Sets | https://newtech-sources.com/products/12-piece-m42-bi-metal-hole-saw-master-technician-kit |

## 3. Detailed Technical Specifications (43 Series)

### 3.1 High-Tension Bi-Metal Hacksaw Frame & Masonry Cutting Hand Tool Kit (NT-HWT-101)
- **Canonical URL**: https://newtech-sources.com/products/high-tension-bi-metal-hacksaw-masonry-hand-tool-kit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/high-tension-bi-metal-hacksaw-masonry-hand-tool-kit.txt
- **Model / SKU**: NT-HWT-101
- **Discipline**: Hardware & Hand Tools
- **Minimum Order Quantity (MOQ)**: 200 Sets
- **Direct RFQ**: https://newtech-sources.com/contact?product=High-Tension%20Bi-Metal%20Hacksaw%20Frame%20%26%20Masonry%20Cutting%20Hand%20Tool%20Kit%20(NT-HWT-101)

**Overview**: The NT-HWT-101 Industrial Hand Tool Kit is built for job-site contractors cutting rebar, conduit, threaded rod, PVC pipe, and masonry anchors. Supports both 90-degree straight cutting and 45-degree flush cutting positions.

**Engineering Highlights**:
- Rigid I-beam aluminum and steel frame maintains 150kg (330 lbs) tension for straight, drift-free cuts
- Shatterproof M2 HSS bi-metal blades last up to 10x longer than conventional carbon steel blades
- Ergonomic non-slip TPR overmolded handle with front helper grip
- Converts to 45-degree flush-cutting angle in seconds without additional tools

**Target Materials & Applications**: Cutting steel conduit, rebar, strut channel, copper tubing, and brass fittings, Plumbing, electrical, HVAC, and masonry site installation, Wholesale hardware distribution and contractor supply houses

**Technical Specifications**:
| bore | size | model | segment |
| --- | --- | --- | --- |
| 45° & 90° Mount | 300mm (12") Frame + 3 Bi-Metal Blades | NT-HWT-101-12 | 18/24/32 TPI M2 HSS |
| Contractor Kit | 300mm (12") Frame + Masonry Chisel Set | NT-HWT-101-PRO | 24 TPI + Cr-V Chisels |

| Parameter | Specification |
| --- | --- |
| Blade Material | M2 High-Speed Steel (HSS) Electron-Beam Welded to Spring Steel Back |
| Tooth Pitch Options | 18 TPI (Heavy Metal), 24 TPI (General Steel/Pipe), 32 TPI (Thin Tubing) |
| Frame Tension Capacity | Up to 150 kg (330 lbs / 30,000 PSI) with Internal Blade Storage |
| Blade Length (Metric / Imperial) | 300mm (12") x 12.7mm (1/2") x 0.65mm (0.025") |

### 3.2 SDS-Plus & SDS-Max Cross-Head (4-Cutter) Heavy-Duty Rotary Hammer Drill Bit (NT-DRL-116)
- **Canonical URL**: https://newtech-sources.com/products/sds-plus-sds-max-cross-head-rotary-hammer-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/sds-plus-sds-max-cross-head-rotary-hammer-drill-bit.txt
- **Model / SKU**: NT-DRL-116
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=SDS-Plus%20%26%20SDS-Max%20Cross-Head%20(4-Cutter)%20Heavy-Duty%20Rotary%20Hammer%20Drill%20Bit%20(NT-DRL-116)

**Overview**: Built for heavy civil engineering, industrial construction, and structural anchor installation. The solid carbide cross-head (4-cutter) geometry ensures continuous round hole concentricity and prevents drill jamming when striking internal rebar. High-volume twin/quadruple helical dust grooves evacuate pulverized concrete debris instantly, dramatically reducing thermal buildup and vibration. 100% pre-shipment tested. Available in SDS-Plus (10mm shank) and SDS-Max (18mm shank) across lengths up to 1000mm (39"). FOB delivery from any port in China.

**Engineering Highlights**:
- Solid carbide 4-cutter cross head eliminates jamming when hitting rebar
- Compatible with all SDS-Plus (10mm) and SDS-Max (18mm) rotary hammer machines
- Twin/quad spiral flutes evacuate pulverized debris with maximum velocity
- Heat-treated 40Cr alloy body dampens vibration and resists high percussion fatigue
- Available in overall lengths from 110mm (4-1/3") up to 1000mm (39")

**Target Materials & Applications**: Reinforced concrete, bridge decks, and pre-cast concrete pillars, Granite, hard basalt, engineered stone, and structural masonry, Mechanical anchor setting and chemical rebar doweling

**Technical Specifications**:
| size | model | shank | length |
| --- | --- | --- | --- |
| 6.0mm (15/64") | NT-DRL-116-06160 | SDS-Plus | 160mm (6-5/16") |
| 8.0mm (5/16") | NT-DRL-116-08160 | SDS-Plus | 160mm (6-5/16") |
| 10.0mm (25/64") | NT-DRL-116-10210 | SDS-Plus | 210mm (8-1/4") |
| 12.0mm (15/32") | NT-DRL-116-12260 | SDS-Plus | 260mm (10-1/4") |
| 16.0mm (5/8") | NT-DRL-116-16310 | SDS-Plus | 310mm (12-3/16") |
| 20.0mm (25/32") | NT-DRL-116-20450 | SDS-Max | 450mm (17-3/4") |

| Parameter | Specification |
| --- | --- |
| Shank Drive | SDS-Plus (10mm) & SDS-Max (18mm Heavy-Duty) |
| Head Configuration | Solid Carbide 4-Cutter Cross Head |
| Carbide Grade | Micrograin YG8C / K10 Tungsten Carbide |
| Diameter Range | 4.0mm – 40.0mm (5/32" – 1-9/16") |
| Overall Lengths | 110mm, 160mm, 210mm, 310mm, 450mm, 1000mm |

### 3.3 M42 8% Cobalt Bi-Metal Variable-Pitch (4/6 TPI) Heavy-Duty Hole Saw (NT-HLS-101)
- **Canonical URL**: https://newtech-sources.com/products/m42-8-percent-cobalt-bi-metal-hole-saw-heavy-duty
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/m42-8-percent-cobalt-bi-metal-hole-saw-heavy-duty.txt
- **Model / SKU**: NT-HLS-101
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=M42%208%25%20Cobalt%20Bi-Metal%20Variable-Pitch%20(4%2F6%20TPI)%20Heavy-Duty%20Hole%20Saw%20(NT-HLS-101)

**Overview**: Constructed with premium Matrix II M42 high-speed steel containing 8% cobalt, electron-beam welded to a tough alloy steel backing. The 4/6 variable tooth pitch delivers aggressive cutting action while dramatically dampening harmonic chatter and vibration. Features a 38mm (1-1/2") or 44mm (1-3/4") cutting depth and deep side slots for fast core slug ejection. 100% pre-shipment tested. Compatible with standard A1/A4 and A2/A10 arbor mandrels. FOB delivery from any port in China.

**Engineering Highlights**:
- M42 high-speed steel with 8% cobalt ensures prolonged edge sharpness in stainless steel
- 4/6 TPI variable tooth pitch suppresses vibration and increases cutting speed by 30%
- Solid heavy-gauge steel backing cap resists thread distortion under high feed torque
- Wide angled slug ejection slots for rapid plug removal without sticking
- Diameter range from 14mm (9/16") up to 210mm (8-1/4")

**Target Materials & Applications**: Stainless steel sheet 304/316, structural carbon steel, and pipework, Cast iron, brass, bronze, aluminum, and sheet metal fabrication, Wood, plastic composites, PVC pipes, and fiberglass panels

**Technical Specifications**:
| size | depth | model | thread |
| --- | --- | --- | --- |
| 22mm (7/8") | 38mm (1-1/2") | NT-HLS-101-022 | 1/2"-20 |
| 35mm (1-3/8") | 38mm (1-1/2") | NT-HLS-101-035 | 5/8"-18 |
| 51mm (2") | 38mm (1-1/2") | NT-HLS-101-051 | 5/8"-18 |
| 76mm (3") | 38mm (1-1/2") | NT-HLS-101-076 | 5/8"-18 |
| 102mm (4") | 38mm (1-1/2") | NT-HLS-101-102 | 5/8"-18 |

| Parameter | Specification |
| --- | --- |
| Tooth Material | M42 HSS (8% Cobalt) Electron-Beam Welded |
| Body Material | Alloy Spring Steel Backing |
| Tooth Geometry | 4/6 TPI Variable Pitch with Positive Rake |
| Cutting Depth | 38mm (1-1/2") & 44mm (1-3/4") |
| Thread Mount | 1/2"-20 (14–30mm) & 5/8"-18 (32–210mm) |

### 3.4 DIN 8039 Tungsten Carbide Tipped (TCT) Masonry & Concrete Impact Drill Bit (NT-DRL-115)
- **Canonical URL**: https://newtech-sources.com/products/din8039-tungsten-carbide-tipped-masonry-impact-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/din8039-tungsten-carbide-tipped-masonry-impact-drill-bit.txt
- **Model / SKU**: NT-DRL-115
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 200 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=DIN%208039%20Tungsten%20Carbide%20Tipped%20(TCT)%20Masonry%20%26%20Concrete%20Impact%20Drill%20Bit%20(NT-DRL-115)

**Overview**: Engineered for contractors and trade professionals requiring reliable percussion drilling in masonry and concrete. The YG8C carbide cutter is vacuum copper-brazed at over 1,100°C to withstand severe impact cycles without detaching. Features rolled or milled flutes with shot-peened or chrome-plated surfaces to prevent corrosion and accelerate rock dust expulsion. 100% pre-shipment tested. Available in straight round shank, 3-flat shank, and 1/4" hex shank. FOB shipment from any port in China.

**Engineering Highlights**:
- DIN 8039 / ISO 5468 standard compliance for masonry impact drilling
- Premium YG8C tungsten carbide cutter brazed at 1100°C for extreme durability
- Wide U-flute or L-flute design clears heavy concrete dust rapidly
- Available in Round Shank, 3-Flat Anti-Slip Shank, and 1/4" Hex Shank
- Corrosion-resistant sandblasted, zinc-plated, or chrome finishes

**Target Materials & Applications**: Brick walls, hollow clay tiles, and aerated concrete blocks, Lightweight stone, mortar, plaster, and screed drilling, Anchor bolt, plastic wall plug, and conduit clip installations

**Technical Specifications**:
| size | model | shank | length |
| --- | --- | --- | --- |
| 5.0mm (3/16") | NT-DRL-115-050 | Round | 85mm (3-3/8") |
| 6.0mm (15/64") | NT-DRL-115-060 | Round | 100mm (4") |
| 8.0mm (5/16") | NT-DRL-115-080 | Round | 120mm (4-3/4") |
| 10.0mm (25/64") | NT-DRL-115-100 | Round | 150mm (6") |
| 12.0mm (15/32") | NT-DRL-115-120 | Round | 150mm (6") |

| Parameter | Specification |
| --- | --- |
| Standard | DIN 8039 / ISO 5468 |
| Tip Material | YG8C Tungsten Carbide Tip |
| Body Material | 40Cr Chrome Alloy Steel Body |
| Brazing Method | High-Temperature Copper Brazing (>1100°C) |
| Diameter Range | 3.0mm – 25.0mm (1/8" – 1") |

### 3.5 HSS Silver & Deming 1/2" (12.7mm) Reduced Shank Drill Bit (NT-DRL-110)
- **Canonical URL**: https://newtech-sources.com/products/hss-silver-and-deming-reduced-shank-drill-bit-half-inch
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/hss-silver-and-deming-reduced-shank-drill-bit-half-inch.txt
- **Model / SKU**: NT-DRL-110
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=HSS%20Silver%20%26%20Deming%201%2F2%22%20(12.7mm)%20Reduced%20Shank%20Drill%20Bit%20(NT-DRL-110)

**Overview**: Silver & Deming (S&D) drills expand the working capacity of standard 1/2" chuck drill presses, magnetic drills, and heavy-duty portable drills. Precision engineered with a uniform 6" (152mm) overall length and 3" (76mm) flute length, featuring a 1/2" turned-down shank with three drive flats to eliminate chuck spinning under high torque. 100% pre-shipment tested. Available in black oxide, black & bright, or TiN finishes. FOB delivery from any port in China.

**Engineering Highlights**:
- Uniform 1/2" (12.7mm) reduced shank fits standard 1/2" portable drill chucks
- 3-flat shank profile prevents drill slippage under extreme rotary torque
- Fixed 6" (152mm) overall length and 3" (76mm) flute length for balanced leverage
- 118° split point penetrates thick steel without center punching
- Forged and ground from premium HSS 4341 / M2 with steam oxide or two-tone finish

**Target Materials & Applications**: Magnetic base drills, 1/2" handheld industrial drills, and pillar presses, Large-diameter hole drilling in structural I-beams, truck frames, and farm machinery, Heavy equipment modification and field maintenance

**Technical Specifications**:
| size | model | shank | length |
| --- | --- | --- | --- |
| 9/16" (14.29mm) | NT-DRL-110-916 | 1/2" | 6" (152mm) |
| 5/8" (15.88mm) | NT-DRL-110-58 | 1/2" | 6" (152mm) |
| 3/4" (19.05mm) | NT-DRL-110-34 | 1/2" | 6" (152mm) |
| 7/8" (22.23mm) | NT-DRL-110-78 | 1/2" | 6" (152mm) |
| 1" (25.40mm) | NT-DRL-110-100 | 1/2" | 6" (152mm) |

| Parameter | Specification |
| --- | --- |
| Standard | Silver & Deming (S&D) 1/2" Shank |
| Shank Diameter | 1/2" (12.70mm) with 3 Driving Flats |
| Overall Length | 6" (152.4mm) Constant |
| Flute Length | 3" (76.2mm) Constant |
| Point Angle | 118° Heavy-Duty Split Point |

### 3.6 ASME B94.11M HSS Jobber Length Straight Shank Twist Drill Bit (NT-DRL-102)
- **Canonical URL**: https://newtech-sources.com/products/asme-b94-11m-hss-jobber-length-straight-shank-twist-drill
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/asme-b94-11m-hss-jobber-length-straight-shank-twist-drill.txt
- **Model / SKU**: NT-DRL-102
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 200 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=ASME%20B94.11M%20HSS%20Jobber%20Length%20Straight%20Shank%20Twist%20Drill%20Bit%20(NT-DRL-102)

**Overview**: Engineered for North American and global contractors requiring ASME B94.11M jobber length standards. The thermal black oxide surface treatment retains cutting fluid, drastically reduces frictional heat, and prevents chip galling. Available across fractional, wire gauge (#1–#80), and letter sizes (A–Z). 100% pre-shipment tested for concentricity and flute pitch. Process by requirement with custom packaging (bulk pack, pouch, or index cassette). FOB delivery from any port in China.

**Engineering Highlights**:
- Strict compliance with North American ASME / ANSI B94.11M specifications
- Steam-tempered black oxide surface treatment for enhanced chip flow and coolant retention
- Available in Fractional (1/64"–1/2"), Letter (A–Z), and Wire Gauge (#1–#80) sizes
- Forged from premium HSS 4341 / M2 steel with 63–65 HRC hardness
- 118° standard chisel edge or 135° heavy-duty split point configurations

**Target Materials & Applications**: Production drilling in sheet metal, structural steel, and ductile iron, General maintenance, repair, and MRO procurement programs, Handheld pneumatic and electric drills, stationary drill presses

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 1/8" (3.18mm) | NT-DRL-102-18 | 2-3/4" (70mm) | 1-7/16" (37mm) |
| 3/16" (4.76mm) | NT-DRL-102-316 | 3-1/2" (89mm) | 2-5/16" (59mm) |
| 1/4" (6.35mm) | NT-DRL-102-14 | 4" (102mm) | 2-3/4" (70mm) |
| 3/8" (9.53mm) | NT-DRL-102-38 | 5" (127mm) | 3-5/8" (92mm) |
| 1/2" (12.70mm) | NT-DRL-102-12 | 6" (152mm) | 4-1/2" (114mm) |

| Parameter | Specification |
| --- | --- |
| Standard | ASME B94.11M / ANSI Jobber Length |
| Material Grade | HSS 4341 / M2 (6542) |
| Finish | Black Oxide Steam Tempered |
| Point Angle | 118° Heavy-Duty Chisel or 135° Split Point |
| Size System | North American Fractional & Letter / Wire |
| Diameter Range | 1/16" – 1/2" (1.58mm – 12.7mm) |

### 3.7 DIN 338 Fully Ground HSS Twist Drill Bit (Bright Finish) (NT-DRL-101)
- **Canonical URL**: https://newtech-sources.com/products/din338-fully-ground-hss-twist-drill-bit-bright-finish
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/din338-fully-ground-hss-twist-drill-bit-bright-finish.txt
- **Model / SKU**: NT-DRL-101
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 200 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=DIN%20338%20Fully%20Ground%20HSS%20Twist%20Drill%20Bit%20(Bright%20Finish)%20(NT-DRL-101)

**Overview**: Manufactured from premium HSS 4241 / 4341 / M2 high-speed steel, this DIN 338 fully ground twist drill features precision-ground spiral flutes for rapid swarf clearance, tight diameter tolerances (h8), and heavy-duty 135° split-point geometry. 100% pre-shipment dimensional inspection ensures smooth, burr-free hole coring across structural steel, cast iron, and non-ferrous alloys. Processed by requirement with customized coatings (TiN, TiAlN) and custom length specifications. FOB delivery available from any port in China.

**Engineering Highlights**:
- DIN 338 standard cylindrical straight shank with h8 tolerance
- 135° split point eliminates drill walking without center punching
- Precision-ground parabolic flutes for optimized chip evacuation
- Available in HSS 4241, 4341, M2 (6542), and M35 5% Cobalt
- Full Metric (0.5mm–20.0mm) and Imperial (1/64"–1/2") size range

**Target Materials & Applications**: Carbon steel, alloy steel, and die steel drilling, Grey and ductile cast iron components, Aluminum, brass, copper, and non-ferrous metals, Industrial fabrication, CNC machining centers, and drill presses

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 3.0mm (1/8") | NT-DRL-101-030 | 61mm (2-3/8") | 33mm (1-5/16") |
| 5.0mm (13/64") | NT-DRL-101-050 | 86mm (3-3/8") | 52mm (2-1/16") |
| 8.0mm (5/16") | NT-DRL-101-080 | 117mm (4-5/8") | 75mm (2-15/16") |
| 10.0mm (25/64") | NT-DRL-101-100 | 133mm (5-1/4") | 87mm (3-7/16") |
| 13.0mm (1/2") | NT-DRL-101-130 | 151mm (6") | 101mm (4") |

| Parameter | Specification |
| --- | --- |
| Manufacturing Standard | DIN 338 RN / ANSI B94.11M |
| Material Grade | HSS 4241 / 4341 / M2 (6542) / M35 Cobalt |
| Point Angle | 118° Standard or 135° Split Point |
| Flute Type | Right-Hand Spiral Type N Fully Ground |
| Surface Treatment | Bright Finish (Polished White) |
| Hardness | 62 – 65 HRC (M2: 63–65 HRC) |
| Diameter Range | 1.0mm – 16.0mm (1/16" – 5/8") |

### 3.8 DIN 345 Morse Taper Shank (MT1–MT5) Heavy-Duty HSS Drill Bit (NT-DRL-107)
- **Canonical URL**: https://newtech-sources.com/products/din345-morse-taper-shank-heavy-duty-hss-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/din345-morse-taper-shank-heavy-duty-hss-drill-bit.txt
- **Model / SKU**: NT-DRL-107
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 50 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=DIN%20345%20Morse%20Taper%20Shank%20(MT1%E2%80%93MT5)%20Heavy-Duty%20HSS%20Drill%20Bit%20(NT-DRL-107)

**Overview**: Engineered for high-torque drilling in heavy structural engineering, shipbuilding, and industrial fabrication. The precision-machined Morse taper shank locks directly into machine spindles without slipping under extreme feed pressures. Features a reinforced web core, steam-tempered black oxide finish, and heavy-duty chisel edge. 100% pre-shipment tested for runout and taper angle. Processed by requirement with MT1, MT2, MT3, MT4, and MT5 tangs. FOB delivery from any port in China.

**Engineering Highlights**:
- DIN 345 precision Morse taper shank (MT1, MT2, MT3, MT4, MT5) eliminates chuck slippage
- Reinforced heavy web core for maximum torsional resistance in thick steel sections
- Steam-tempered black oxide finish prevents chip adhesion and reduces wear
- Wide diameter availability from 10.0mm (25/64") up to 60.0mm (2-3/8")
- Tang drive complies with ISO 296 / DIN 228 form B machine spindles

**Target Materials & Applications**: Radial drill presses, pillar drills, and boring machines, Shipbuilding, steel girder bridges, and pressure vessel fabrication, Lathe tailstock hole drilling in alloy shafts and forgings

**Technical Specifications**:
| size | model | taper | length | fluteLength |
| --- | --- | --- | --- | --- |
| 14.0mm (35/64") | NT-DRL-107-140 | MT1 | 189mm (7-7/16") | 108mm (4-1/4") |
| 20.0mm (25/32") | NT-DRL-107-200 | MT2 | 238mm (9-3/8") | 140mm (5-1/2") |
| 25.0mm (63/64") | NT-DRL-107-250 | MT3 | 281mm (11-1/16") | 160mm (6-5/16") |
| 32.0mm (1-1/4") | NT-DRL-107-320 | MT4 | 334mm (13-1/8") | 185mm (7-5/16") |
| 40.0mm (1-9/16") | NT-DRL-107-400 | MT4 | 349mm (13-3/4") | 200mm (7-7/8") |

| Parameter | Specification |
| --- | --- |
| Standard | DIN 345 / ISO 296 / DIN 228-B |
| Material Grade | HSS 4341 / HSS M2 (6542) / HSS-Co M35 |
| Shank Taper | Morse Taper MT1 to MT5 with Tang Drive |
| Diameter Range | 10.0mm – 60.0mm (25/64" – 2-3/8") |
| Point Angle | 118° Standard Heavy-Duty Point |

### 3.9 TCT Tungsten Carbide Tipped Heavy-Duty Metal & Stainless Steel Hole Saw (NT-HLS-112)
- **Canonical URL**: https://newtech-sources.com/products/tct-carbide-tipped-metal-stainless-steel-hole-saw
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/tct-carbide-tipped-metal-stainless-steel-hole-saw.txt
- **Model / SKU**: NT-HLS-112
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=TCT%20Tungsten%20Carbide%20Tipped%20Heavy-Duty%20Metal%20%26%20Stainless%20Steel%20Hole%20Saw%20(NT-HLS-112)

**Overview**: Engineered for high-volume metal fabrication where bi-metal hole saws wear out rapidly. The Triple-Chip Ground (TCG) tungsten carbide teeth slice through tough stainless steel 304/316, structural alloy plates, cast iron, and fiberglass reinforced plastics with minimal heat generation. Features a stepped cobalt center pilot drill with built-in ejection spring to expel slugs instantly upon breakthrough. 100% pre-shipment tested. Available in diameters from 14mm to 150mm. FOB delivery from any port in China.

**Engineering Highlights**:
- Micrograin tungsten carbide teeth deliver up to 10x the life of bi-metal in stainless steel
- Triple-chip tooth geometry balances cutting forces and reduces thermal buildup
- Spring-loaded stepped cobalt center drill automatically ejects metal core slugs
- Solid one-piece body with 3-flat shank prevents chuck slippage under high load
- Cuts up to 25mm (1") thick plate steel and pipes

**Target Materials & Applications**: Stainless steel tanks, pipework, and commercial kitchen fabrication, Heavy structural steel I-beams, truck chassis, and railway cars, Abrasive fiberglass reinforced plastics (FRP) and composite materials

**Technical Specifications**:
| size | model | maxDepth |
| --- | --- | --- |
| 22mm (7/8") | NT-HLS-112-022 | 25mm (1") |
| 30mm (1-3/16") | NT-HLS-112-030 | 25mm (1") |
| 35mm (1-3/8") | NT-HLS-112-035 | 25mm (1") |
| 50mm (2") | NT-HLS-112-050 | 25mm (1") |
| 75mm (3") | NT-HLS-112-075 | 25mm (1") |

| Parameter | Specification |
| --- | --- |
| Tooth Material | Micrograin Tungsten Carbide (TCT) |
| Tooth Geometry | Triple-Chip Ground (TCG) Multi-Angle Teeth |
| Max Plate Thickness | Up to 25mm (1") Steel |
| Shank | 10mm (3/8") with 3 Anti-Slip Flats |
| Diameter Range | 14mm – 150mm (9/16" – 6") |

### 3.10 DIN 1897 HSS Stubby (Short Flute) Drill Bit for Sheet Metal & Automotive (NT-DRL-103)
- **Canonical URL**: https://newtech-sources.com/products/din1897-hss-stubby-drill-bit-for-sheet-metal-and-automotive
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/din1897-hss-stubby-drill-bit-for-sheet-metal-and-automotive.txt
- **Model / SKU**: NT-DRL-103
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=DIN%201897%20HSS%20Stubby%20(Short%20Flute)%20Drill%20Bit%20for%20Sheet%20Metal%20%26%20Automotive%20(NT-DRL-103)

**Overview**: DIN 1897 stubby drills feature an abbreviated flute length that delivers superior rigidity, preventing drill deflection and premature breakage in handheld pneumatic drills, auto-body repair shops, and multi-spindle automatic screw machines. Featuring 135° split points, these bits penetrate thin sheet metals and tubing without snagging or deforming thin materials. 100% pre-shipment tested. Available in bright, black oxide, or amber cobalt finishes. Flexible delivery from any port in China.

**Engineering Highlights**:
- DIN 1897 stub length offers maximum structural rigidity under radial loads
- 135° split point design cuts clean holes in curved sheet metal and automotive panels
- Short flutes prevent chatter and drill deflection in automatic screw machines
- Premium HSS 4341 / M2 / M35 Cobalt substrate options
- Direct OEM packaging in polybags, plastic hanging boxes, or custom branded cards

**Target Materials & Applications**: Automotive body repair, panel rivet hole preparation, Aircraft skin and structural aluminum sheet coring, Pneumatic handheld drilling on industrial assembly lines

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 3.0mm (1/8") | NT-DRL-103-030 | 46mm (1-13/16") | 16mm (5/8") |
| 4.0mm (5/32") | NT-DRL-103-040 | 55mm (2-3/16") | 22mm (7/8") |
| 5.0mm (13/64") | NT-DRL-103-050 | 62mm (2-7/16") | 26mm (1") |
| 8.0mm (5/16") | NT-DRL-103-080 | 79mm (3-1/8") | 37mm (1-7/16") |

| Parameter | Specification |
| --- | --- |
| Standard | DIN 1897 (Stub Length) |
| Material Grade | HSS 4341 / M2 / M35 (Cobalt) |
| Point Angle | 135° Self-Centering Split Point |
| Diameter Range | 1.0mm – 13.0mm (1/16" – 1/2") |
| Flute Length Ratio | Approx. 50% shorter than DIN 338 |

### 3.11 HSS Double-Ended Sheet Metal & Rivet Hole Drill Bit (NT-DRL-109)
- **Canonical URL**: https://newtech-sources.com/products/hss-double-ended-sheet-metal-rivet-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/hss-double-ended-sheet-metal-rivet-drill-bit.txt
- **Model / SKU**: NT-DRL-109
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 500 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=HSS%20Double-Ended%20Sheet%20Metal%20%26%20Rivet%20Hole%20Drill%20Bit%20(NT-DRL-109)

**Overview**: Engineered for maximum cost efficiency in high-volume sheet metal assembly, the double-ended design provides two active cutting heads on a single short flute body. When one side dulls, simply reverse the bit in the chuck for instant resumption of work. The heavy web core and 135° split point prevent breakthrough burrs and snagging in thin sheet steel, brass, and plastics. 100% pre-shipment inspected. Processed by requirement with custom packaging options. Flexible delivery from any port in China.

**Engineering Highlights**:
- Double-ended cutting tips double tool service life per unit cost
- Short flutes and rigid web eliminate drill chatter and breakage in thin sheet
- 135° split point pierces instantly without walking or center punch marks
- Available in fractional (1/8", 3/16", 1/4") and metric (3.0mm–6.5mm) sizes
- Premium HSS 4341 / M2 alloy steel with bright polished or amber finish

**Target Materials & Applications**: Automotive bodywork, pop-rivet and blind-rivet hole drilling, HVAC sheet metal ductwork and roofing cladding installations, Electrical control box and enclosure knockouts and assembly

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 3.2mm (1/8") | NT-DRL-109-032 | 49mm (1-15/16") | 11mm (7/16") each end |
| 4.0mm (5/32") | NT-DRL-109-040 | 55mm (2-3/16") | 14mm (9/16") each end |
| 4.8mm (3/16") | NT-DRL-109-048 | 62mm (2-7/16") | 17mm (11/16") each end |

| Parameter | Specification |
| --- | --- |
| Design Type | Double-Ended Stub Twist Drill |
| Material Grade | HSS 4341 / M2 (6542) |
| Point Angle | 135° Split Point |
| Diameter Range | 2.0mm – 6.5mm (5/64" – 1/4") |
| Overall Length | 45mm – 65mm (1-3/4" – 2-1/2") |

### 3.12 Brass-Coated Crimped High-Tensile Steel Wire Cup Brush for Angle Grinders (NT-WBR-101)
- **Canonical URL**: https://newtech-sources.com/products/brass-coated-crimped-wire-cup-brush-angle-grinder
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/brass-coated-crimped-wire-cup-brush-angle-grinder.txt
- **Model / SKU**: NT-WBR-101
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 200 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Brass-Coated%20Crimped%20High-Tensile%20Steel%20Wire%20Cup%20Brush%20for%20Angle%20Grinders%20(NT-WBR-101)

**Overview**: Constructed with uniform high-tensile brass-coated carbon steel wire, dynamically balanced to eliminate tool vibration at speeds up to 12,500 RPM. The crimped wire construction delivers high flexibility on contoured surfaces, sheet metal panels, and angle profiles without gouging the base substrate. 100% pre-shipment tested for rotational balance according to EN 1083 / ANSI B165.1 safety standards. Available with M14x2, M10x1.5, and North American 5/8"-11 threaded arbors. FOB delivery from any port in China.

**Engineering Highlights**:
- Brass-coated high-tensile carbon steel wire provides superior corrosion protection
- Dynamically balanced body reduces angle grinder fatigue and bearing wear
- Flexible crimped wire action cleans contoured sheet metal without digging
- Threaded arbors: M14x2, M10x1.5, 5/8"-11 UNC, or multi-bore options

**Target Materials & Applications**: Shipyard deck descaling, storage tank rust removal, bridge repainting, Automotive body panel paint stripping and seam sealer removal, Cast iron foundry fettling and structural steel weld spatter cleaning

**Technical Specifications**:
| size | wire | model | maxRpm | thread |
| --- | --- | --- | --- | --- |
| 65mm (2-1/2") | 0.30mm | NT-WBR-101-065 | 12,500 | M14x2 |
| 75mm (3") | 0.30mm | NT-WBR-101-075 | 12,500 | M14x2 |
| 100mm (4") | 0.35mm | NT-WBR-101-100 | 8,500 | M14x2 / 5/8"-11 |
| 125mm (5") | 0.35mm | NT-WBR-101-125 | 6,500 | 5/8"-11 |

| Parameter | Specification |
| --- | --- |
| Brush Type | Crimped Wire Cup Brush |
| Wire Material | Brass-Coated Carbon Steel (0.30mm / 0.35mm) |
| Thread Standard | M14x2.0 / 5/8"-11 UNC / M10x1.5 |
| Safety Standard | EN 1083 / ANSI B165.1 Certified Balance |
| Diameter Range | 65mm – 150mm (2-1/2" – 6") |

### 3.13 Integrated Bi-Metal Hole Saw with Welded Hex Shank & Ejection Spring (NT-HLS-106)
- **Canonical URL**: https://newtech-sources.com/products/integrated-bi-metal-hole-saw-with-welded-hex-shank
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/integrated-bi-metal-hole-saw-with-welded-hex-shank.txt
- **Model / SKU**: NT-HLS-106
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Integrated%20Bi-Metal%20Hole%20Saw%20with%20Welded%20Hex%20Shank%20%26%20Ejection%20Spring%20(NT-HLS-106)

**Overview**: Designed for maximum job-site speed and convenience, the integrated bi-metal hole saw eliminates the need for separate arbors, mandrels, and loose threaded parts. The heavy-duty hex shank is welded directly to the solid backing plate, guaranteeing perfect concentricity and zero arbor wobble. The built-in ejection spring automatically pushes out core slugs upon breakthrough. 100% pre-shipment tested. Available in individual blister cards or contractor sets. FOB delivery from any port in China.

**Engineering Highlights**:
- 1-piece integrated design requires no separate arbor or assembly tools
- Precision welded hex shank fits all standard 3-jaw and quick-release chucks
- Spring-loaded pilot bit automatically ejects metal and wood slugs
- Premium M3 / M42 bi-metal tooth edge for fast, clean cutting

**Target Materials & Applications**: High-speed electrical box knockouts and lighting retrofits, Sheet metal enclosure penetrations in ventilation systems, On-site plumbing installation and maintenance

**Technical Specifications**:
| size | model | shank |
| --- | --- | --- |
| 20mm (25/32") | NT-HLS-106-020 | 1/4" Hex |
| 25mm (1") | NT-HLS-106-025 | 1/4" Hex |
| 32mm (1-1/4") | NT-HLS-106-032 | 3/8" Hex |
| 50mm (2") | NT-HLS-106-050 | 3/8" Hex |

| Parameter | Specification |
| --- | --- |
| Design Type | 1-Piece Integrated Welded Shank |
| Shank | 1/4" or 3/8" Quick-Change Hex Shank |
| Tooth Material | HSS Bi-Metal with 4/6 TPI |
| Diameter Range | 16mm – 76mm (5/8" – 3") |
| Ejection Mechanism | Spring-Loaded Pilot Drill Core Ejector |

### 3.14 1/4" Quick-Change Hex Shank Brad Point Drill Bit for Wood (NT-DRL-113)
- **Canonical URL**: https://newtech-sources.com/products/quick-change-hex-shank-woodworking-brad-point-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/quick-change-hex-shank-woodworking-brad-point-drill-bit.txt
- **Model / SKU**: NT-DRL-113
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=1%2F4%22%20Quick-Change%20Hex%20Shank%20Brad%20Point%20Drill%20Bit%20for%20Wood%20(NT-DRL-113)

**Overview**: Engineered for cabinet makers, carpenters, and wooden furniture factories. The precision-ground center brad point aligns precisely on layout marks, while dual outer spurs score the wood fibers before the main cutting lips remove material. This yields razor-sharp, tear-out-free hole entry and exit in solid hardwoods, softwoods, plywood, and veneered MDF. The 1/4" hex shank fits directly into quick-change chucks. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- Precision center brad point eliminates wandering on wood grains
- Dual outer spurs scribe clean hole perimeter without surface blowout
- Wide polished flutes ensure fast chip clearing in resinous woods
- 1/4" (6.35mm) quick-change hex shank for cordless impact/drill compatibility
- High-carbon steel or Chrome-Vanadium alloy for enduring edge sharpness

**Target Materials & Applications**: Dowel joinery and shelf pin hole drilling in cabinets, Hardwood, softwood, plywood, MDF, and laminated particleboard, Woodworking shop installation and DIY remodeling projects

**Technical Specifications**:
| size | model | shank | length |
| --- | --- | --- | --- |
| 4.0mm (5/32") | NT-DRL-113-040 | 1/4" Hex | 85mm (3-3/8") |
| 6.0mm (15/64") | NT-DRL-113-060 | 1/4" Hex | 95mm (3-3/4") |
| 8.0mm (5/16") | NT-DRL-113-080 | 1/4" Hex | 105mm (4-1/8") |
| 10.0mm (25/64") | NT-DRL-113-100 | 1/4" Hex | 120mm (4-3/4") |

| Parameter | Specification |
| --- | --- |
| Tip Design | Brad Point with Dual Outer Spurs |
| Shank | 1/4" (6.35mm) Quick-Change Hex |
| Material | High Carbon Steel / Chrome-Vanadium |
| Diameter Range | 3.0mm – 16.0mm (1/8" – 5/8") |

### 3.15 1/4" Quick-Change Hex Shank HSS Impact Drill Bit for Metal (NT-DRL-112)
- **Canonical URL**: https://newtech-sources.com/products/quick-change-hex-shank-impact-drill-bit-for-metal
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/quick-change-hex-shank-impact-drill-bit-for-metal.txt
- **Model / SKU**: NT-DRL-112
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=1%2F4%22%20Quick-Change%20Hex%20Shank%20HSS%20Impact%20Drill%20Bit%20for%20Metal%20(NT-DRL-112)

**Overview**: Engineered for contractors and industrial workers utilizing cordless impact drivers and quick-release chucks. The 1/4" (6.35mm) DIN 3126 E6.3 hex shank locks instantly into impact chucks, transferring continuous high torque without spin-out. Built with an optimized shock-absorbing torsion zone and 135° split point that cuts immediately into sheet metal, structural steel, and pipes. 100% pre-shipment tested. Available in one-piece solid hex or heavy-duty two-piece assembled constructions. FOB delivery from any port in China.

**Engineering Highlights**:
- 1/4" (6.35mm) DIN 3126 E6.3 quick-change hex shank fits all cordless impact drivers
- Impact-rated torsion neck absorbs peak torque spikes to protect cutting edge
- 135° split point bites instantly without center punch or drill wandering
- Available in premium solid 1-piece HSS or high-torque 2-piece bonded hex shank
- Choice of titanium nitride (TiN) gold coating or black oxide finish

**Target Materials & Applications**: Cordless impact driver drilling in electrical and plumbing installations, Metal roofing, cladding, and solar panel racking assemblies, Field maintenance and fast-paced construction job sites

**Technical Specifications**:
| size | model | shank | length |
| --- | --- | --- | --- |
| 3.0mm (1/8") | NT-DRL-112-030 | 1/4" Hex | 80mm (3-1/8") |
| 4.5mm (11/64") | NT-DRL-112-045 | 1/4" Hex | 95mm (3-3/4") |
| 6.5mm (1/4") | NT-DRL-112-065 | 1/4" Hex | 105mm (4-1/8") |
| 10.0mm (25/64") | NT-DRL-112-100 | 1/4" Hex | 133mm (5-1/4") |

| Parameter | Specification |
| --- | --- |
| Shank Standard | 1/4" (6.35mm) DIN 3126 E6.3 Hex |
| Material Grade | HSS 4341 / HSS M2 (6542) |
| Point Angle | 135° Self-Centering Split Point |
| Size Range | 1.5mm – 13.0mm (1/16" – 1/2") |

### 3.16 High-Carbon Steel (HCS) Wood, Drywall & PVC Hole Saw Cutter (NT-HLS-108)
- **Canonical URL**: https://newtech-sources.com/products/high-carbon-steel-wood-drywall-hole-saw-cutter
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/high-carbon-steel-wood-drywall-hole-saw-cutter.txt
- **Model / SKU**: NT-HLS-108
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=High-Carbon%20Steel%20(HCS)%20Wood%2C%20Drywall%20%26%20PVC%20Hole%20Saw%20Cutter%20(NT-HLS-108)

**Overview**: Engineered for high-efficiency, cost-effective hole cutting in interior decoration, ceiling spotlight installation, and timber framing. Induction-hardened sharp carbon steel teeth rip smoothly through plasterboard, drywall, softwoods, particleboard, and plastics without clogging. Features standard threaded base caps compatible with universal arbor mandrels. 100% pre-shipment inspected. Available in individual packaging or bulk contractor bundles. FOB delivery from any port in China.

**Engineering Highlights**:
- Induction-hardened carbon steel teeth deliver fast cuts in soft materials
- Wide gullet tooth spacing prevents sawdust buildup in resinous wood and drywall
- Standard universal threaded arbor connection
- Cost-effective solution for large-scale commercial drywall and residential jobs

**Target Materials & Applications**: Ceiling recessed can spotlight and speaker cutouts in drywall/plasterboard, Wooden furniture cable grommets and desk pass-through holes, PVC drainage piping and plastic electrical conduit penetrations

**Technical Specifications**:
| size | depth | model |
| --- | --- | --- |
| 51mm (2") | 25mm (1") | NT-HLS-108-051 |
| 64mm (2-1/2") | 25mm (1") | NT-HLS-108-064 |
| 76mm (3") | 25mm (1") | NT-HLS-108-076 |
| 102mm (4") | 25mm (1") | NT-HLS-108-102 |
| 127mm (5") | 32mm (1-1/4") | NT-HLS-108-127 |

| Parameter | Specification |
| --- | --- |
| Material Grade | 50# / 65Mn High-Carbon Steel (HCS) |
| Tooth Hardness | 52 – 56 HRC |
| Cutting Depth | 25mm (1") & 32mm (1-1/4") |
| Diameter Range | 19mm – 152mm (3/4" – 6") |

### 3.17 Bench Grinder Narrow-Face Crimped Steel Wire Wheel Brush (NT-WBR-106)
- **Canonical URL**: https://newtech-sources.com/products/bench-grinder-narrow-crimped-wire-wheel-brush
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/bench-grinder-narrow-crimped-wire-wheel-brush.txt
- **Model / SKU**: NT-WBR-106
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Bench%20Grinder%20Narrow-Face%20Crimped%20Steel%20Wire%20Wheel%20Brush%20(NT-WBR-106)

**Overview**: Constructed with uniform crimped carbon steel wire securely locked into a heavy-gauge stamped steel core. Comes standard with a set of multi-ring nesting arbor adapters to fit 1/2", 5/8", 3/4", 7/8", 1", and 1-1/4" grinder shafts. Ideal for machine shops, garages, and toolrooms for deburring cut ends, cleaning threads, removing rust, and restoring hand tools. 100% pre-shipment tested for balance. FOB delivery from any port in China.

**Engineering Highlights**:
- Includes multi-size telescopic arbor adapter rings for universal bench grinder fit
- Uniform high-density crimped wire creates fine brushed finishes without gouging
- Heavy dual-plate steel core maintains concentricity at high peripheral speeds
- Available in brass-coated carbon steel and AISI 304 stainless wire

**Target Materials & Applications**: Bolt and stud thread cleaning, hand tool de-rusting, spark plug conditioning, Cut tube and pipe end deburring in machine shops and metalwork schools, Surface satin finishing, edge radiusing, and light scale removal

**Technical Specifications**:
| bore | size | model | width | maxRpm |
| --- | --- | --- | --- | --- |
| 1/2" – 1-1/4" | 150mm (6") | NT-WBR-106-150 | 20mm | 6,000 |
| 1/2" – 1-1/4" | 200mm (8") | NT-WBR-106-200 | 25mm | 4,500 |

| Parameter | Specification |
| --- | --- |
| Brush Type | Narrow Face Wire Wheel Brush |
| Wire Diameter | 0.30mm (0.012") / 0.35mm (0.014") |
| Center Bore | 32mm (1-1/4") with nested bushings (1/2" to 1") |
| Face Width | 15mm – 25mm (5/8" – 1") |
| Wheel Diameters | 125mm (5"), 150mm (6"), 178mm (7"), 200mm (8"), 250mm (10") |

### 3.18 Heavy-Duty Knotted (Twisted) High-Carbon Steel Wire Cup Brush (NT-WBR-102)
- **Canonical URL**: https://newtech-sources.com/products/heavy-duty-knotted-twist-steel-wire-cup-brush
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/heavy-duty-knotted-twist-steel-wire-cup-brush.txt
- **Model / SKU**: NT-WBR-102
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Heavy-Duty%20Knotted%20(Twisted)%20High-Carbon%20Steel%20Wire%20Cup%20Brush%20(NT-WBR-102)

**Overview**: Engineered for maximum cutting aggression under severe industrial workloads. The tightly twisted wire tufts concentrate cutting impact at the tips, attacking heavy weld scale, thick rust, corrosion pits, and marine fouling with ruthless efficiency. The reinforced heavy steel cup retains wire integrity under extreme radial force. 100% pre-shipment tested. Available in oil-tempered high-carbon steel and AISI 304 stainless steel wires. FOB delivery from any port in China.

**Engineering Highlights**:
- Tightly twisted wire knots deliver aggressive high-impact cutting action
- Reinforced heavy-gauge steel cup resists expansion under high centrifugal forces
- Oil-tempered carbon steel (0.50mm) or AISI 304 stainless steel options
- EN 1083 dynamic balance compliance for smooth, vibration-free operation

**Target Materials & Applications**: Heavy weld seam cleaning, slag chipping, and root pass preparation, Heavy rust, corrosion pitting, and thick industrial coating removal, Pipeline girth weld refurbishment and offshore platform maintenance

**Technical Specifications**:
| size | model | maxRpm | thread |
| --- | --- | --- | --- |
| 65mm (2-1/2") | NT-WBR-102-065 | 12,500 | M14x2 |
| 75mm (3") | NT-WBR-102-075 | 12,500 | M14x2 / 5/8"-11 |
| 100mm (4") | NT-WBR-102-100 | 8,500 | M14x2 / 5/8"-11 |
| 125mm (5") | NT-WBR-102-125 | 6,500 | 5/8"-11 |

| Parameter | Specification |
| --- | --- |
| Brush Type | Knotted Twist Wire Cup Brush |
| Wire Diameter | 0.50mm (0.020") Oil-Tempered Steel |
| Thread Connection | M14x2.0 / 5/8"-11 UNC |
| Diameter Range | 65mm – 125mm (2-1/2" – 5") |

### 3.19 TCT Tungsten Carbide Tipped Woodworking & Heavy Timber Hole Saw (NT-HLS-113)
- **Canonical URL**: https://newtech-sources.com/products/tct-carbide-tipped-woodworking-and-timber-hole-saw
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/tct-carbide-tipped-woodworking-and-timber-hole-saw.txt
- **Model / SKU**: NT-HLS-113
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=TCT%20Tungsten%20Carbide%20Tipped%20Woodworking%20%26%20Heavy%20Timber%20Hole%20Saw%20(NT-HLS-113)

**Overview**: Engineered for timber framers, utility contractors, and remodeling professionals who encounter hard knots, abrasive glues, and nail-embedded timber. The brazed tungsten carbide teeth power through abrasive MDF, treated decking, dense hardwoods, and structural laminated beams where conventional bits instantly dull. Deep flute valleys ensure rapid chip ejection even in green or wet lumber. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- Heavy tungsten carbide teeth slice through nail-embedded wood and hard knots
- Wide-spaced gullets clear heavy wood chips rapidly without clogging
- Extended cutting depth accommodates thick timber studs and joists
- Compatible with universal 5/8"-18 threaded arbor mandrels

**Target Materials & Applications**: Timber framing, log homes, and heavy wood structural drilling, Utility pole wiring and plumbing pass-through holes in subfloors, Demolition lumber, reclaimed wood, and glue-laminated beams

**Technical Specifications**:
| size | depth | model |
| --- | --- | --- |
| 51mm (2") | 54mm (2-1/8") | NT-HLS-113-051 |
| 64mm (2-1/2") | 54mm (2-1/8") | NT-HLS-113-064 |
| 76mm (3") | 54mm (2-1/8") | NT-HLS-113-076 |
| 102mm (4") | 54mm (2-1/8") | NT-HLS-113-102 |

| Parameter | Specification |
| --- | --- |
| Tooth Material | Heavy-Duty Tungsten Carbide (TCT) |
| Cutting Depth | 50mm – 65mm (2" – 2-1/2") |
| Thread Connection | 5/8"-18 Standard Arbor Thread |
| Diameter Range | 32mm – 152mm (1-1/4" – 6") |

### 3.20 Integrated High-Carbon Steel Hole Saw with Fixed Round Shank (NT-HLS-110)
- **Canonical URL**: https://newtech-sources.com/products/integrated-carbon-steel-woodworking-hole-saw
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/integrated-carbon-steel-woodworking-hole-saw.txt
- **Model / SKU**: NT-HLS-110
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 200 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Integrated%20High-Carbon%20Steel%20Hole%20Saw%20with%20Fixed%20Round%20Shank%20(NT-HLS-110)

**Overview**: A rugged, low-cost cutting solution engineered for DIY tool packages, furniture makers, and drywall installers. The fixed shank is factory-machined and pressed into the heavy carbon steel cup, ensuring rigid alignment without loose nuts or adapters. Deep chip gullets prevent pitch accumulation when boring through softwoods, particle boards, and PVC pipes. 100% pre-shipment inspected. FOB delivery from any port in China.

**Engineering Highlights**:
- Integrated 1-piece body and shank eliminates assembly complications
- Heat-treated carbon steel teeth for dependable cutting in softwoods and drywall
- Wide chip relief slots on sides for easy core plug removal
- Available in individual hanging cards or packaged master kits

**Target Materials & Applications**: Wooden furniture cable management grommet holes, Interior partition drywall and ceiling spotlight installations, PVC conduit and rainwater pipe penetrations

**Technical Specifications**:
| size | depth | model |
| --- | --- | --- |
| 32mm (1-1/4") | 25mm (1") | NT-HLS-110-032 |
| 51mm (2") | 25mm (1") | NT-HLS-110-051 |
| 64mm (2-1/2") | 25mm (1") | NT-HLS-110-064 |
| 76mm (3") | 25mm (1") | NT-HLS-110-076 |

| Parameter | Specification |
| --- | --- |
| Material | High Carbon Steel (HCS) |
| Shank | Integrated 10mm (3/8") Round Shank |
| Cutting Depth | 25mm (1") |
| Diameter Range | 25mm – 102mm (1" – 4") |

### 3.21 Industrial Hole Saw Quick-Lock Arbors, Mandrels & HSS Pilot Bits (NT-HLS-109)
- **Canonical URL**: https://newtech-sources.com/products/hole-saw-quick-lock-arbors-mandrels-pilot-drills
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/hole-saw-quick-lock-arbors-mandrels-pilot-drills.txt
- **Model / SKU**: NT-HLS-109
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Industrial%20Hole%20Saw%20Quick-Lock%20Arbors%2C%20Mandrels%20%26%20HSS%20Pilot%20Bits%20(NT-HLS-109)

**Overview**: Essential accessories for all bi-metal and carbon steel hole saws. Manufactured from high-tensile 40Cr alloy steel and heat-treated for extreme torsional resistance. The small arbors (A1 / A4) fit 14mm–30mm hole saws with 1/2"-20 thread; the large arbors (A2 / A10) feature two sliding drive pins that engage directly into the hole saw back cap, transferring immense rotational torque without overtightening or seizing the thread. 100% pre-shipment inspected. FOB delivery from any port in China.

**Engineering Highlights**:
- Sliding dual drive pins absorb rotational torque, preventing arbor thread seizure
- Available in 3/8" (9.5mm) & 7/16" (11mm) hex shanks and SDS-Plus hammer shanks
- Precision-ground HSS M2 center pilot drill with 135° split point eliminates wandering
- Heavy set screw securely locks center drill against displacement during heavy cuts

**Target Materials & Applications**: Drive connection for 14mm to 210mm (9/16" to 8-1/4") hole saws, Heavy industrial drilling in structural steel, pipe flanges, and wood timbers, Contractor toolkits and replacement accessory programs

**Technical Specifications**:
| fit | model | shank | thread |
| --- | --- | --- | --- |
| 14mm – 30mm Saws | NT-HLS-109-A1 | 3/8" Hex (9.5mm) | 1/2"-20 |
| 32mm – 210mm Saws | NT-HLS-109-A2 | 7/16" Hex (11mm) | 5/8"-18 with Drive Pins |
| 14mm – 30mm Saws | NT-HLS-109-A4 | 1/4" Round Shank | 1/2"-20 |
| 32mm – 210mm Saws | NT-HLS-109-SDS | SDS-Plus Hammer Shank | 5/8"-18 with Drive Pins |

| Parameter | Specification |
| --- | --- |
| Material | Heat-Treated 40Cr High-Tensile Alloy Steel |
| Thread Sizes | 1/2"-20 UNF (Small Saws) & 5/8"-18 UNF (Large Saws) |
| Pilot Drill | 1/4" (6.35mm) HSS M2 Fully Ground Split Point |
| Available Shanks | 3/8" Hex, 7/16" Hex, SDS-Plus |

### 3.22 Sheet Metal Thin-Gauge Bi-Metal Hole Saw with Safety Depth Stop Collar (NT-HLS-107)
- **Canonical URL**: https://newtech-sources.com/products/sheet-metal-thin-gauge-bi-metal-hole-saw-with-depth-stop
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/sheet-metal-thin-gauge-bi-metal-hole-saw-with-depth-stop.txt
- **Model / SKU**: NT-HLS-107
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Sheet%20Metal%20Thin-Gauge%20Bi-Metal%20Hole%20Saw%20with%20Safety%20Depth%20Stop%20Collar%20(NT-HLS-107)

**Overview**: Engineered specifically for electrical switchgear, automotive sheet metal, and HVAC technicians. Featuring a shallow 5mm (3/16") to 8mm (5/16") cutting depth combined with a wide raised safety collar that acts as a positive depth stop, preventing the cutter from punching through and slicing into electrical cables, hydraulic hoses, or underlying components. Fine 8 TPI teeth provide smooth, burr-free edges in sheet metal without snagging. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- Safety depth stop collar prevents over-penetration into internal cables and pipes
- Shallow cutting cup engineered specifically for sheet steel, brass, and aluminum
- Fine tooth pitch creates smooth, burr-free entry without grabbing thin sheet
- Ejection spring ensures immediate core slug expulsion

**Target Materials & Applications**: Electrical control cabinets, transformer enclosures, switchgear boxes, Automotive body panel modification, fleet vehicle outfitting, Thin stainless steel panels (up to 2mm / 14 gauge)

**Technical Specifications**:
| size | model |
| --- | --- |
| 20.4mm (M20 Electrical / 13/16") | NT-HLS-107-020 |
| 25.4mm (M25 Electrical / 1") | NT-HLS-107-025 |
| 32.5mm (M32 Electrical / 1-9/32") | NT-HLS-107-032 |
| 40.5mm (M40 Electrical / 1-19/32") | NT-HLS-107-040 |

| Parameter | Specification |
| --- | --- |
| Feature | Safety Depth Stop Collar |
| Cutting Depth | 6mm – 8mm (1/4" – 5/16") Shallow Cup |
| Tooth Material | M42 / M3 High-Speed Bi-Metal |
| Tooth Pitch | 8 TPI Fine Pitch for Thin Sheet |

### 3.23 DIN 340 HSS Long-Length Straight Shank Twist Drill Bit (NT-DRL-105)
- **Canonical URL**: https://newtech-sources.com/products/din340-hss-long-length-straight-shank-twist-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/din340-hss-long-length-straight-shank-twist-drill-bit.txt
- **Model / SKU**: NT-DRL-105
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 100 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=DIN%20340%20HSS%20Long-Length%20Straight%20Shank%20Twist%20Drill%20Bit%20(NT-DRL-105)

**Overview**: When standard jobber drills cannot reach the required depth, the DIN 340 long series provides up to 50% more flute and overall length. Precision ground with wide flute valleys to accelerate swarf ejection from deep bores and prevent chips from packing in the hole. Ideal for mold making, steel fabrication fixtures, and automotive frame manufacturing. 100% pre-shipment tested. FOB shipment from any port in China.

**Engineering Highlights**:
- DIN 340 extended overall and flute length for deep cavity drilling
- Wide parabolic flute channels accelerate deep-bore chip ejection
- 118° or 135° split point for accurate hole start without deflection
- HSS 4341 / M2 / M35 Cobalt construction with steam oxide or bright finish

**Target Materials & Applications**: Injection mold water-cooling line drilling, Deep structural channel sections and hollow tube drilling, Jig and fixture bushing guided drilling

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 4.0mm (5/32") | NT-DRL-105-040 | 119mm (4-11/16") | 78mm (3-1/16") |
| 6.0mm (15/64") | NT-DRL-105-060 | 139mm (5-1/2") | 91mm (3-9/16") |
| 8.0mm (5/16") | NT-DRL-105-080 | 165mm (6-1/2") | 109mm (4-5/16") |
| 10.0mm (25/64") | NT-DRL-105-100 | 184mm (7-1/4") | 121mm (4-3/4") |

| Parameter | Specification |
| --- | --- |
| Standard | DIN 340 RN |
| Material | HSS M2 (6542) / HSS 4341 |
| Diameter Range | 1.5mm – 16.0mm (1/16" – 5/8") |
| Flute Geometry | Parabolic Deep Evacuation Flute |

### 3.24 HSS Aircraft Extension Drill Bit (6" & 12" Long Reach) (NT-DRL-111)
- **Canonical URL**: https://newtech-sources.com/products/hss-aircraft-extension-drill-bit-6-inch-12-inch
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/hss-aircraft-extension-drill-bit-6-inch-12-inch.txt
- **Model / SKU**: NT-DRL-111
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=HSS%20Aircraft%20Extension%20Drill%20Bit%20(6%22%20%26%2012%22%20Long%20Reach)%20(NT-DRL-111)

**Overview**: Manufactured to meet the rigorous tolerances of aerospace and defense maintenance (NAS 907 type J/B specifications). Aircraft extension drills feature an extended round shank behind a standard flute, providing the reach needed to clear deep structural bulkheads, rib stiffeners, and HVAC framing. The 135° split point bites immediately on curved aluminum alloys and titanium sheets without creeping. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- NAS 907 aerospace standard compliance for high concentricity
- Available in 6" (152mm) and 12" (305mm) extended overall reach
- 135° split point self-centers without center punch on curved surfaces
- High-speed steel M2 / M35 Cobalt construction with black oxide or bright finish

**Target Materials & Applications**: Aerospace airframe maintenance, skin riveting, and rib bulkhead drilling, Commercial HVAC, refrigeration tubing, and deep conduit penetrations, Automotive roll cage and tubular chassis fabrications

**Technical Specifications**:
| size | model | reach | fluteLength |
| --- | --- | --- | --- |
| 1/8" (3.18mm) | NT-DRL-111-18-6 | 6" (152mm) | 1-7/16" (37mm) |
| 3/16" (4.76mm) | NT-DRL-111-316-6 | 6" (152mm) | 2-5/16" (59mm) |
| 1/4" (6.35mm) | NT-DRL-111-14-12 | 12" (305mm) | 2-3/4" (70mm) |
| 3/8" (9.53mm) | NT-DRL-111-38-12 | 12" (305mm) | 3-5/8" (92mm) |

| Parameter | Specification |
| --- | --- |
| Standard | NAS 907 Type J / B |
| Overall Lengths | 6" (152mm) & 12" (305mm) |
| Material Grade | HSS M2 (6542) / HSS-Co M35 |
| Point Angle | 135° Split Point Self-Centering |

### 3.25 Professional Chrome-Vanadium Woodworking Brad Point Drill Bit Series (NT-DRL-114)
- **Canonical URL**: https://newtech-sources.com/products/professional-woodworking-brad-point-drill-bit-set
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/professional-woodworking-brad-point-drill-bit-set.txt
- **Model / SKU**: NT-DRL-114
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 200 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Professional%20Chrome-Vanadium%20Woodworking%20Brad%20Point%20Drill%20Bit%20Series%20(NT-DRL-114)

**Overview**: Crafted from hardened Chrome-Vanadium (Cr-V) alloy steel to maintain keen cutting edges far longer than standard carbon steel bits. The razor-sharp center spur locates the drill with pinpoint precision, while outer contour spurs slice timber fibers cleanly, preventing tear-out even on cross-grain hardwoods. 100% pre-shipment tested for diameter and straightness. Processed by requirement in individual packaging or boxed contractor sets. FOB delivery from any port in China.

**Engineering Highlights**:
- Hardened Chrome-Vanadium (Cr-V) steel holds sharp cutting lips longer
- Precision-machined centering point prevents bit skating on dense woods
- Outer cutting spurs eliminate tear-out and blowout at hole exit
- Mirror-polished wide flutes clear wood shavings effortlessly

**Target Materials & Applications**: Fine furniture craftsmanship, antique restoration, and joinery, Hardwoods (Oak, Maple, Walnut, Teak), softwoods, and composite timber, Precision doweling and wooden peg assemblies

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 5.0mm (13/64") | NT-DRL-114-050 | 85mm (3-3/8") | 52mm (2-1/16") |
| 8.0mm (5/16") | NT-DRL-114-080 | 117mm (4-5/8") | 75mm (2-15/16") |
| 10.0mm (25/64") | NT-DRL-114-100 | 133mm (5-1/4") | 87mm (3-7/16") |
| 12.0mm (15/32") | NT-DRL-114-120 | 151mm (6") | 101mm (4") |

| Parameter | Specification |
| --- | --- |
| Material | Chrome-Vanadium (Cr-V) Alloy Steel |
| Point Design | Center Brad Point & Twin Scribe Spurs |
| Shank | Straight Round Shank (Cylindrical) |
| Size Range | 3.0mm – 20.0mm (1/8" – 3/4") |

### 3.26 Pipeline Stringer Bead Heavy-Duty Knotted Twist Wire Wheel Brush (NT-WBR-108)
- **Canonical URL**: https://newtech-sources.com/products/pipeline-stringer-bead-knotted-wire-wheel-brush
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/pipeline-stringer-bead-knotted-wire-wheel-brush.txt
- **Model / SKU**: NT-WBR-108
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Pipeline%20Stringer%20Bead%20Heavy-Duty%20Knotted%20Twist%20Wire%20Wheel%20Brush%20(NT-WBR-108)

**Overview**: Known throughout the pipeline and heavy welding industries as the 'Stringer Bead' brush. Engineered with an exceptionally narrow face width (approx. 6mm to 8mm / 1/4" to 5/16") composed of high-count, tightly wound wire knots. This profile allows the high-impact wire tips to reach all the way down into deep, narrow pipeline root passes and J-grooves without disturbing adjacent bevel surfaces. 100% pre-shipment tested. Available in 22.23mm (7/8") bore and 5/8"-11 threaded arbors. FOB delivery from any port in China.

**Engineering Highlights**:
- Ultra-narrow face width (6mm–8mm) fits deep into narrow weld root passes
- High-density knots made from 0.50mm oil-tempered steel wire deliver impact force
- Reinforced steel side plates prevent knot separation under severe torque
- Rated for high-speed operation on 4-1/2", 5", and 7" angle grinders

**Target Materials & Applications**: Oil, gas, and water cross-country pipeline girth weld root cleaning, Narrow J-bevel, U-groove, and deep V-prep weld slag chipping, Expansion joint resealing and pavement crack cleaning

**Technical Specifications**:
| size | model | width | maxRpm |
| --- | --- | --- | --- |
| 115mm (4-1/2") | NT-WBR-108-115 | 6mm | 12,500 |
| 125mm (5") | NT-WBR-108-125 | 6mm | 12,500 |
| 178mm (7") | NT-WBR-108-178 | 8mm | 9,000 |

| Parameter | Specification |
| --- | --- |
| Designation | Stringer Bead Pipeline Wheel |
| Face Width | 6mm – 8mm (1/4" – 5/16") Ultra-Narrow |
| Wire Diameter | 0.50mm (0.020") Oil-Tempered High-Tensile Steel |
| Arbor Options | 22.23mm (7/8") Bore or 5/8"-11 / M14 Threaded |

### 3.27 DIN 341 Extra-Long Morse Taper Shank Heavy-Duty HSS Drill Bit (NT-DRL-108)
- **Canonical URL**: https://newtech-sources.com/products/din341-extra-long-morse-taper-shank-hss-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/din341-extra-long-morse-taper-shank-hss-drill-bit.txt
- **Model / SKU**: NT-DRL-108
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 30 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=DIN%20341%20Extra-Long%20Morse%20Taper%20Shank%20Heavy-Duty%20HSS%20Drill%20Bit%20(NT-DRL-108)

**Overview**: Combining the self-locking high-torque capability of Morse taper shanks with extra-long flute and overall dimensions to DIN 341. Precision manufactured from heat-treated HSS M2 / 4341 steel, this tool drills through deep structural components where standard DIN 345 bits fall short. Features wide chip clearance flutes to prevent binding in deep iron and alloy steel holes. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- DIN 341 extra-long series provides significant extra depth over DIN 345
- Self-locking Morse taper shank MT1, MT2, MT3, MT4 for positive spindle drive
- Wide parabolic flute channels evacuate chips efficiently from deep cavities
- Heavy-duty 118° chisel point engineered for cast steel, forged iron, and alloys

**Target Materials & Applications**: Extra-deep hole drilling in heavy castings and forged steel blocks, Heavy mining equipment frames and offshore structural fabrications, Large injection mold base deep waterlines and ejector guide holes

**Technical Specifications**:
| size | model | taper | length | fluteLength |
| --- | --- | --- | --- | --- |
| 15.0mm (19/32") | NT-DRL-108-150 | MT2 | 267mm (10-1/2") | 160mm (6-5/16") |
| 20.0mm (25/32") | NT-DRL-108-200 | MT2 | 294mm (11-9/16") | 181mm (7-1/8") |
| 25.0mm (63/64") | NT-DRL-108-250 | MT3 | 355mm (14") | 220mm (8-11/16") |

| Parameter | Specification |
| --- | --- |
| Standard | DIN 341 / ISO 494 |
| Material Grade | HSS M2 (6542) / HSS 4341 |
| Shank Taper | Morse Taper MT1 to MT4 |
| Finish | Steam Tempered Black Oxide |

### 3.28 ASME B94.11M Screw Machine Length Stubby HSS Drill Bit (NT-DRL-104)
- **Canonical URL**: https://newtech-sources.com/products/asme-b94-11m-screw-machine-length-stubby-drill-bit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/asme-b94-11m-screw-machine-length-stubby-drill-bit.txt
- **Model / SKU**: NT-DRL-104
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=ASME%20B94.11M%20Screw%20Machine%20Length%20Stubby%20HSS%20Drill%20Bit%20(NT-DRL-104)

**Overview**: Designed in accordance with ASME B94.11M Screw Machine specifications, these short-flute drills minimize vibration and runout in multi-spindle automatic screw machines, Swiss lathes, and CNC turning centers. Engineered with thick web cores for maximum torsional strength, they handle high-feed cycle times without tool drift. Fully custom manufactured to buyer requirements with choice of surface treatments. FOB delivery from any port in China.

**Engineering Highlights**:
- ASME B94.11M Screw Machine Short Flute standard for maximum rigidity
- Heavy web core design prevents breakage during aggressive CNC feed rates
- 135° split point minimizes thrust force requirements
- Full Imperial fraction, wire gauge, and letter sizes available

**Target Materials & Applications**: Swiss-style automatic screw machine turning, CNC multi-spindle lathe high-speed production, Rigid production drilling in cast metals and alloy bars

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 1/8" (3.18mm) | NT-DRL-104-18 | 1-7/8" (48mm) | 7/8" (22mm) |
| 1/4" (6.35mm) | NT-DRL-104-14 | 2-1/2" (64mm) | 1-3/8" (35mm) |
| 3/8" (9.53mm) | NT-DRL-104-38 | 3-1/8" (79mm) | 1-13/16" (46mm) |

| Parameter | Specification |
| --- | --- |
| Standard | ASME B94.11M Screw Machine |
| Material Grade | HSS M2 (6542) / HSS-Co M35 |
| Point Angle | 135° Split Point |
| Finish | Black Oxide / Bright / TiN Coated |

### 3.29 ASME B94.11M Taper Length Straight Shank HSS Drill Bit (NT-DRL-106)
- **Canonical URL**: https://newtech-sources.com/products/asme-b94-11m-taper-length-straight-shank-hss-drill
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/asme-b94-11m-taper-length-straight-shank-hss-drill.txt
- **Model / SKU**: NT-DRL-106
- **Discipline**: Drills
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=ASME%20B94.11M%20Taper%20Length%20Straight%20Shank%20HSS%20Drill%20Bit%20(NT-DRL-106)

**Overview**: Engineered for North American machine shops and manufacturing facilities, ASME B94.11M taper-length drills match the flute and overall dimensions of taper shank drills while featuring a standard straight shank. This allows deep-hole and through-bushing drilling on conventional drill chucks and toolholders without needing Morse taper adapters. 100% pre-shipment inspected. Processed by requirement with black oxide or bright finishes.

**Engineering Highlights**:
- ASME B94.11M Taper Length proportions with straight shank convenience
- Significantly longer reach than standard jobber drills
- 118° heavy-duty point with black oxide lubricity treatment
- Precision concentric ground body for tight hole clearance

**Target Materials & Applications**: Deep-hole drilling in standard drill presses and milling chucks, Through-hole drilling in heavy plate fabrications, Agricultural machinery and heavy equipment repair

**Technical Specifications**:
| size | model | length | fluteLength |
| --- | --- | --- | --- |
| 1/4" (6.35mm) | NT-DRL-106-14 | 5-1/8" (130mm) | 3-3/8" (86mm) |
| 3/8" (9.53mm) | NT-DRL-106-38 | 6-1/4" (159mm) | 4-1/4" (108mm) |
| 1/2" (12.70mm) | NT-DRL-106-12 | 7-3/4" (197mm) | 5-1/4" (133mm) |

| Parameter | Specification |
| --- | --- |
| Standard | ASME B94.11M Taper Length |
| Material Grade | HSS 4341 / M2 |
| Shank Style | Straight Cylindrical Shank |
| Point Angle | 118° Heavy-Duty Point |

### 3.30 9-Piece M42 Bi-Metal Hole Saw Set for Electricians & Plumbers (NT-HLS-102)
- **Canonical URL**: https://newtech-sources.com/products/9-piece-m42-bi-metal-hole-saw-set-electrician-plumber
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/9-piece-m42-bi-metal-hole-saw-set-electrician-plumber.txt
- **Model / SKU**: NT-HLS-102
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 50 Sets
- **Direct RFQ**: https://newtech-sources.com/contact?product=9-Piece%20M42%20Bi-Metal%20Hole%20Saw%20Set%20for%20Electricians%20%26%20Plumbers%20(NT-HLS-102)

**Overview**: Tailored specifically for electrical contractors, plumbers, and maintenance mechanics. This 9-piece kit contains the 6 most widely utilized conduit and pipe sizes (19mm/3/4", 22mm/7/8", 29mm/1-1/8", 38mm/1-1/2", 44mm/1-3/4", 57mm/2-1/4"), coupled with a 3/8" hex small arbor, a 7/16" pin-drive large arbor with HSS pilot drill, and an arbor adapter. Packed in an impact-resistant contractor case. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- 6 most popular trade sizes for electrical conduit and copper/PVC plumbing pipes
- M42 8% cobalt tooth construction provides long life in stainless and carbon steel
- Includes 2 industrial arbors with HSS pilot drills and thread adapter
- Heavy-duty blow-mold carrying case with custom foam/bracket organization

**Target Materials & Applications**: Electrical junction boxes, panel cutouts, and wire chase holes, Plumbing drain, supply line, and HVAC refrigerant piping penetrations, General MRO facilities maintenance and industrial field service

**Technical Specifications**:
| size | model | cuttingDepth |
| --- | --- | --- |
| 6 Saws (19–57mm) + 2 Arbors + 1 Adapter | NT-HLS-102-SET | 38mm (1-1/2") |

| Parameter | Specification |
| --- | --- |
| Set Piece Count | 9 Pieces Total |
| Tooth Material | M42 HSS (8% Cobalt) Bi-Metal |
| Hole Saw Sizes | 19, 22, 29, 38, 44, 57mm (3/4", 7/8", 1-1/8", 1-1/2", 1-3/4", 2-1/4") |
| Included Arbors | Small Hex Arbor (1/2"-20) & Large Pin-Drive Arbor (5/8"-18) |
| Packaging | Heavy-Duty Blow-Molded Contractor Case |

### 3.31 Multi-Blade 7-in-1 Concentric Nest Hole Saw Cutter Set (NT-HLS-111)
- **Canonical URL**: https://newtech-sources.com/products/multi-blade-7-in-1-concentric-nest-hole-saw-cutter
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/multi-blade-7-in-1-concentric-nest-hole-saw-cutter.txt
- **Model / SKU**: NT-HLS-111
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 200 Sets
- **Direct RFQ**: https://newtech-sources.com/contact?product=Multi-Blade%207-in-1%20Concentric%20Nest%20Hole%20Saw%20Cutter%20Set%20(NT-HLS-111)

**Overview**: A versatile space-saving cutting set for homeowners, maintenance staff, and carpenters. Features a heavy-duty die-cast aluminum alloy drive disc that accommodates 7 interchangeable concentric flexible saw bands ranging from 25mm (1") to 63mm (2-1/2"). Simply select the required diameter blade and insert it into the matching base groove. Cuts clean circular openings in wood, plasterboard, and plastics without requiring multiple bulky tools. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- 7 interchangeable concentric cutting blades nestled in one compact aluminum disc
- Blades: 25mm, 32mm, 38mm, 45mm, 50mm, 56mm, 63mm (1" to 2-1/2")
- Heavy die-cast alloy base with integral 3/8" round arbor shank and pilot bit
- Induction-hardened teeth slice cleanly through timber, plywood, and drywall

**Target Materials & Applications**: Woodworking, joinery, and wooden craft fabrication, Ceiling drywall and plywood partition electrical penetrations, Compact tool kits and residential maintenance sets

**Technical Specifications**:
| size | depth | model |
| --- | --- | --- |
| 7 Blades (25–63mm) + Aluminum Disc Base | 25mm (1") | NT-HLS-111-7IN1 |

| Parameter | Specification |
| --- | --- |
| Configuration | 7-in-1 Concentric Nested Blades |
| Base Material | Die-Cast Aluminum Alloy |
| Blade Material | Hardened 65Mn Spring Steel |
| Included Diameters | 25, 32, 38, 45, 50, 56, 63mm (1" – 2-1/2") |
| Cutting Depth | 25mm (1") |

### 3.32 Drop-Forged Chrome-Vanadium Heavy-Duty Adjustable & Pipe Wrench Series (NT-HWT-102)
- **Canonical URL**: https://newtech-sources.com/products/drop-forged-chrome-vanadium-adjustable-pipe-wrench-series
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/drop-forged-chrome-vanadium-adjustable-pipe-wrench-series.txt
- **Model / SKU**: NT-HWT-102
- **Discipline**: Hardware & Hand Tools
- **Minimum Order Quantity (MOQ)**: 200 Pieces
- **Direct RFQ**: https://newtech-sources.com/contact?product=Drop-Forged%20Chrome-Vanadium%20Heavy-Duty%20Adjustable%20%26%20Pipe%20Wrench%20Series%20(NT-HWT-102)

**Overview**: Manufactured by Newtech Sources Co., Ltd. for industrial MRO and plumbing/mechanical distributors, the NT-HWT-102 Wrench Series features induction-hardened jaws, zero-backlash precision worm gears, and dual Metric/SAE laser scales.

**Engineering Highlights**:
- Wide-capacity jaw design provides 20% greater opening than standard adjustable wrenches
- Permanent laser-etched Metric (mm) and Imperial (inch) measurement scales for fast fastener sizing
- 4-thread knurled adjustment worm gear prevents jaw slippage under peak torque
- Available in black oxide industrial finish, satin chrome, or dipped cushion grip

**Target Materials & Applications**: Plumbing pipe assembly, hydraulic fitting maintenance, and structural bolting, Industrial plant MRO, oilfield maintenance, and commercial HVAC installation, Private-label hardware retail programs across North America and Europe

**Technical Specifications**:
| bore | size | model | segment |
| --- | --- | --- | --- |
| Dual mm/inch Scale | 200mm (8.0") Length | NT-HWT-102-08 | 30mm (1-3/16") Max Jaw |
| Dual mm/inch Scale | 250mm (10.0") Length | NT-HWT-102-10 | 36mm (1-7/16") Max Jaw |
| Dual mm/inch Scale | 300mm (12.0") Length | NT-HWT-102-12 | 43mm (1-11/16") Max Jaw |

| Parameter | Specification |
| --- | --- |
| Body Material | Drop-Forged Chrome-Vanadium Steel (Cr-V), Black Phosphate or Satin Chrome Finish |
| Jaw Scale Marking | Dual Laser-Etched Metric (mm) on Front / Imperial (inch) on Reverse |
| Max Jaw Capacity (Metric / Imperial) | 24mm (15/16"), 30mm (1-3/16"), 36mm (1-7/16"), 43mm (1-11/16"), 52mm (2-1/16") |
| Lengths Available (Metric / Imperial) | 150mm (6"), 200mm (8"), 250mm (10"), 300mm (12"), 375mm (15") |

### 3.33 Heavy-Duty Knotted Wire Cup Brush with Removable Bridle (Restraining Ring) (NT-WBR-103)
- **Canonical URL**: https://newtech-sources.com/products/knotted-wire-cup-brush-with-removable-bridle-ring
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/knotted-wire-cup-brush-with-removable-bridle-ring.txt
- **Model / SKU**: NT-WBR-103
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Heavy-Duty%20Knotted%20Wire%20Cup%20Brush%20with%20Removable%20Bridle%20(Restraining%20Ring)%20(NT-WBR-103)

**Overview**: Engineered for maximum cost efficiency and prolonged operating life on severe weld cleaning and heavy fabrication. The exterior steel restraining ring (bridle) constrains the wire tufts, minimizing flare and increasing stiffness for aggressive gouging. When the exposed wire wears down, simply knock off the bridle ring to expose fresh, resilient wire, effectively doubling the usable life of the brush. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- Removable metal bridle ring controls wire flare for extra aggressive cutting
- Bridle ring removal effectively doubles the usable service life of the brush
- 0.50mm premium high-tensile oil-tempered carbon steel wire knots
- Precision thread mounting prevents wobble on high-output 7" and 9" angle grinders

**Target Materials & Applications**: Shipbuilding plate seam prep, weld spatter removal, and root weld descaling, Pipeline construction, bridge girder fabrication, and heavy mining repairs, Extreme rust descaling and thick asphalt/rubber mastic stripping

**Technical Specifications**:
| size | model | thread |
| --- | --- | --- |
| 75mm (3") with Bridle | NT-WBR-103-075 | M14x2 |
| 100mm (4") with Bridle | NT-WBR-103-100 | M14x2 / 5/8"-11 |
| 125mm (5") with Bridle | NT-WBR-103-125 | 5/8"-11 |

| Parameter | Specification |
| --- | --- |
| Feature | Removable Metal Bridle (Restraining Ring) |
| Wire Diameter | 0.50mm (0.020") High Carbon Steel |
| Thread Mount | M14x2.0 / 5/8"-11 UNC |
| Diameter Range | 75mm – 125mm (3" – 5") |

### 3.34 Industrial Conical Bevel (Saucer) Wire Brush for Fillet Welds & Edges (NT-WBR-105)
- **Canonical URL**: https://newtech-sources.com/products/industrial-bevel-saucer-wire-brush-for-fillet-welds
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/industrial-bevel-saucer-wire-brush-for-fillet-welds.txt
- **Model / SKU**: NT-WBR-105
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Industrial%20Conical%20Bevel%20(Saucer)%20Wire%20Brush%20for%20Fillet%20Welds%20%26%20Edges%20(NT-WBR-105)

**Overview**: The unique conical saucer profile of the bevel wire brush allows the operator to work simultaneously along both surfaces of a 90° corner or fillet weld without tilting the angle grinder at extreme wrist angles. Combines aggressive edge cleaning with wide surface contact. Available in both tightly knotted twist wire for heavy slag and crimped brass-coated wire for uniform finishing. 100% pre-shipment tested. Available in M14x2 and 5/8"-11 arbors. FOB delivery from any port in China.

**Engineering Highlights**:
- Conical bevel geometry penetrates easily into hard-to-reach 90° internal angles
- Ergonomic grinder posture reduces operator wrist strain during long shifts
- Available in heavy knotted twist (0.50mm) or flexible crimped (0.35mm) wire
- Threaded arbor M14x2 or 5/8"-11 with dynamic balance testing

**Target Materials & Applications**: Structural steel fillet welds, stiffener plates, and angle iron joints, Piping branch saddle welds and manifold junction cleaning, Vehicle chassis interior corners, heavy trailer bed welding

**Technical Specifications**:
| size | model | maxRpm | thread |
| --- | --- | --- | --- |
| 100mm (4") Knotted | NT-WBR-105-100K | 12,500 | M14x2 |
| 115mm (4-1/2") Knotted | NT-WBR-105-115K | 12,500 | M14x2 / 5/8"-11 |
| 125mm (5") Crimped | NT-WBR-105-125C | 11,000 | M14x2 / 5/8"-11 |

| Parameter | Specification |
| --- | --- |
| Brush Profile | Conical Bevel (Saucer Shape) |
| Available Diameters | 100mm (4"), 115mm (4-1/2"), 125mm (5") |
| Wire Styles | Knotted Twist & Crimped Wire |
| Thread Standard | M14x2.0 / 5/8"-11 UNC |

### 3.35 Standard Heavy-Duty Knotted Twist Steel Wire Circular Wheel Brush (NT-WBR-109)
- **Canonical URL**: https://newtech-sources.com/products/standard-heavy-duty-knotted-twist-wire-wheel-brush
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/standard-heavy-duty-knotted-twist-wire-wheel-brush.txt
- **Model / SKU**: NT-WBR-109
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Standard%20Heavy-Duty%20Knotted%20Twist%20Steel%20Wire%20Circular%20Wheel%20Brush%20(NT-WBR-109)

**Overview**: The workhorse abrasive wire wheel for steel fabricators, shipyards, and heavy machine shops. Featuring a standard face width (12mm to 19mm / 1/2" to 3/4") with rugged twisted wire tufts that deliver aggressive impact on flat steel surfaces, structural channel edges, and heavy weld caps. Precision stamped dual side plates lock the knot roots firmly, preventing breakage and fatigue. 100% pre-shipment tested for rotational balance. FOB delivery from any port in China.

**Engineering Highlights**:
- Standard face width for versatile general-purpose heavy-duty fabrication cleaning
- Individual twisted knots act like mini chisels against heavy scale and slag
- Oil-tempered 0.50mm spring steel wire provides high resilience and long life
- Available with plain bore or threaded arbor (5/8"-11, M14x2)

**Target Materials & Applications**: Weld cap cleaning and heavy spatter descaling on structural beams, Heavy edge deburring on laser-cut and plasma-cut thick plate steel, Marine hull corrosion descaling and industrial tank rehabilitation

**Technical Specifications**:
| size | model | maxRpm | thread |
| --- | --- | --- | --- |
| 115mm (4-1/2") | NT-WBR-109-115 | 12,500 | M14x2 / 5/8"-11 |
| 125mm (5") | NT-WBR-109-125 | 12,500 | M14x2 / 5/8"-11 |
| 178mm (7") | NT-WBR-109-178 | 9,000 | 5/8"-11 |

| Parameter | Specification |
| --- | --- |
| Brush Type | Standard Face Knotted Wire Wheel |
| Face Width | 12mm – 19mm (1/2" – 3/4") |
| Wire Diameter | 0.50mm (0.020") High Carbon Steel |
| Diameters | 100mm, 115mm, 125mm, 150mm, 178mm, 200mm |

### 3.36 Industrial Solid Wire End Brush (Crimped & Knotted Styles) for Die Grinders (NT-WBR-111)
- **Canonical URL**: https://newtech-sources.com/products/industrial-solid-wire-end-brush-crimped-and-knotted
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/industrial-solid-wire-end-brush-crimped-and-knotted.txt
- **Model / SKU**: NT-WBR-111
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Industrial%20Solid%20Wire%20End%20Brush%20(Crimped%20%26%20Knotted%20Styles)%20for%20Die%20Grinders%20(NT-WBR-111)

**Overview**: Engineered for high-speed spot cleaning, carbon removal, and internal deburring where wheel or cup brushes cannot enter. The forward-facing end wire configuration cuts aggressively at the tip, scrubbing bottom surfaces of blind holes, recessed valve pockets, and tight casting junctions. The knotted twist variant concentrates severe cutting power for carbon slag, while the crimped wire variant flares smoothly into bottom corners. 100% pre-shipment tested for concentric balance up to 20,000 RPM. FOB delivery from any port in China.

**Engineering Highlights**:
- Forward-facing end brush profile accesses blind hole bottoms and spot welds
- Available in flexible crimped wire or ultra-aggressive knotted twist tufts
- Heavy-duty 1/4" (6.35mm) steel shank rated for high speeds up to 20,000 RPM
- Premium carbon steel and stainless steel 304 wire options

**Target Materials & Applications**: Automotive cylinder head carbon cleaning and valve port porting, Spot weld cleanup and automotive sheet metal seam preparation, Machined casting blind holes, hydraulic manifold deburring

**Technical Specifications**:
| size | model | shank | maxRpm |
| --- | --- | --- | --- |
| 19mm (3/4") Crimped | NT-WBR-111-19C | 1/4" | 20,000 |
| 25mm (1") Knotted Twist | NT-WBR-111-25K | 1/4" | 20,000 |

| Parameter | Specification |
| --- | --- |
| Brush Type | Solid Wire End Brush (Pen Shape) |
| Shank Diameter | 1/4" (6.35mm) Heavy-Duty Steel |
| Brush Diameters | 12mm (1/2"), 19mm (3/4"), 25mm (1"), 30mm (1-3/16") |
| Max Speed | Up to 20,000 RPM |

### 3.37 Wide-Face Multi-Section Heavy-Duty Crimped Wire Wheel Brush (NT-WBR-107)
- **Canonical URL**: https://newtech-sources.com/products/wide-face-heavy-duty-crimped-wire-wheel-brush
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/wide-face-heavy-duty-crimped-wire-wheel-brush.txt
- **Model / SKU**: NT-WBR-107
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 80 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Wide-Face%20Multi-Section%20Heavy-Duty%20Crimped%20Wire%20Wheel%20Brush%20(NT-WBR-107)

**Overview**: Constructed by interlocking multiple heavy crimped wire sections onto an integral heavy-duty steel core. The wide face width (38mm to 75mm / 1-1/2" to 3") provides broad, uniform coverage across wide panels, aluminum extrusions, and timber planks in a single pass. Precision balanced to ensure whisper-smooth rotation on automated finishing machines, deburring lines, and heavy pedestal grinders. 100% pre-shipment inspected. FOB delivery from any port in China.

**Engineering Highlights**:
- Extra-wide face width (up to 75mm / 3") for maximum production throughput
- Interlocked multi-section construction delivers dense, uniform wire fill
- Precision dynamic balancing prevents spindle vibration at production speeds
- Ideal for both heavy industrial descaling and wood grain texturing

**Target Materials & Applications**: Rustic wood flooring distressing and grain accentuation, Automated conveyor line deburring of stampings and extrusions, Wide sheet metal, plate steel, and beam scale descaling

**Technical Specifications**:
| size | model | width | maxRpm |
| --- | --- | --- | --- |
| 150mm (6") | NT-WBR-107-150W | 40mm (1-1/2") | 6,000 |
| 200mm (8") | NT-WBR-107-200W | 50mm (2") | 4,500 |

| Parameter | Specification |
| --- | --- |
| Configuration | Multi-Section Wide Face Wheel |
| Face Width | 38mm – 75mm (1-1/2" – 3") |
| Wheel Diameters | 150mm (6"), 200mm (8"), 250mm (10"), 300mm (12") |
| Wire Material | Brass-Coated Carbon Steel (0.30mm / 0.35mm) |

### 3.38 1/4" (6.35mm) Shank-Mounted Crimped Wire Cup Brush for Power Drills (NT-WBR-104)
- **Canonical URL**: https://newtech-sources.com/products/shank-mounted-crimped-wire-cup-brush-for-drills
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/shank-mounted-crimped-wire-cup-brush-for-drills.txt
- **Model / SKU**: NT-WBR-104
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=1%2F4%22%20(6.35mm)%20Shank-Mounted%20Crimped%20Wire%20Cup%20Brush%20for%20Power%20Drills%20(NT-WBR-104)

**Overview**: Designed for light-to-medium surface conditioning, deburring, and rust removal inside recessed pockets, inner corners, valve bodies, and blind holes where large angle grinders cannot fit. The 1/4" (6.35mm) solid steel shank chucks directly into standard cordless drills, drill presses, and straight die grinders. 100% pre-shipment tested for concentricity up to 4,500 RPM. Available in brass-coated steel, stainless steel, and coarse carbon steel. FOB delivery from any port in China.

**Engineering Highlights**:
- 1/4" (6.35mm) / 6mm solid drive shank fits standard power drill chucks
- Compact cup diameter (38mm–75mm) reaches into confined recesses and castings
- Brass-coated or stainless steel wire prevents contamination on non-ferrous parts
- Rated for safe operation up to 4,500 RPM

**Target Materials & Applications**: Deburring internal cavities, engine cylinder heads, and valve seats, Rust and carbon removal on machined castings and automotive parts, Wood texturing and rustic grain accentuation in furniture crafting

**Technical Specifications**:
| size | model | shank | maxRpm |
| --- | --- | --- | --- |
| 50mm (2") | NT-WBR-104-050 | 1/4" | 4,500 |
| 75mm (3") | NT-WBR-104-075 | 1/4" | 4,500 |

| Parameter | Specification |
| --- | --- |
| Shank Diameter | 1/4" (6.35mm) or 6.0mm Round / Hex |
| Wire Type | 0.30mm Brass-Coated High-Tensile Steel |
| Cup Diameters | 38mm (1-1/2"), 50mm (2"), 65mm (2-1/2"), 75mm (3") |

### 3.39 1/4" (6.35mm) Shank-Mounted Crimped Wire Wheel Brush for Die Grinders (NT-WBR-110)
- **Canonical URL**: https://newtech-sources.com/products/shank-mounted-crimped-wire-wheel-brush-for-die-grinders
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/shank-mounted-crimped-wire-wheel-brush-for-die-grinders.txt
- **Model / SKU**: NT-WBR-110
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 300 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=1%2F4%22%20(6.35mm)%20Shank-Mounted%20Crimped%20Wire%20Wheel%20Brush%20for%20Die%20Grinders%20(NT-WBR-110)

**Overview**: Engineered for precise localized cleaning, light deburring, and surface blending in narrow slots, tube ends, weld grooves, and keyways. The permanently bonded 1/4" (6.35mm) steel shaft runs true without runout at speeds up to 15,000 RPM. Constructed with uniform crimped carbon steel or stainless steel wires. 100% pre-shipment inspected. FOB delivery from any port in China.

**Engineering Highlights**:
- 1/4" (6.35mm) precision ground shank runs true in collet chucks and die grinders
- Compact wheel sizes (38mm–100mm / 1-1/2"–4") reach into deep grooves and tubing
- High RPM capability up to 15,000 RPM for fast finishing cycles
- Available in brass-coated steel, high-carbon steel, and stainless 304 wires

**Target Materials & Applications**: Pipe and tubing internal weld deburring and thread cleaning, Machine component keyway, slot, and groove surface cleaning, Precision casting flash removal and mold cavity restoration

**Technical Specifications**:
| size | model | shank | maxRpm |
| --- | --- | --- | --- |
| 50mm (2") | NT-WBR-110-050 | 1/4" | 15,000 |
| 75mm (3") | NT-WBR-110-075 | 1/4" | 12,000 |

| Parameter | Specification |
| --- | --- |
| Shank Diameter | 1/4" (6.35mm) or 6.0mm Round Shank |
| Wheel Diameters | 38mm (1-1/2"), 50mm (2"), 75mm (3"), 100mm (4") |
| Wire Diameter | 0.30mm Brass-Coated High-Tensile Steel |

### 3.40 Silicon Carbide (SiC) Abrasive Nylon Filament Cup & Wheel Brush Series (NT-WBR-112)
- **Canonical URL**: https://newtech-sources.com/products/silicon-carbide-abrasive-nylon-cup-and-wheel-brush
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/silicon-carbide-abrasive-nylon-cup-and-wheel-brush.txt
- **Model / SKU**: NT-WBR-112
- **Discipline**: Wire Brushes
- **Minimum Order Quantity (MOQ)**: 150 Pcs
- **Direct RFQ**: https://newtech-sources.com/contact?product=Silicon%20Carbide%20(SiC)%20Abrasive%20Nylon%20Filament%20Cup%20%26%20Wheel%20Brush%20Series%20(NT-WBR-112)

**Overview**: Engineered as a safe, spark-free alternative to steel wire brushes for precision deburring, oxide removal, and satin surface finishing. Each flexible nylon filament is densely impregnated with tough Silicon Carbide (SiC) abrasive crystals that act like flexible grinding files. The bristles continuously expose fresh abrasive grains as they wear, maintaining a constant cutting action without gouging aluminum, copper, or fine timber. 100% pre-shipment tested. Available in cup, wheel, and end styles across grit sizes 80# to 240#. FOB delivery from any port in China.

**Engineering Highlights**:
- Silicon carbide abrasive grain embedded inside nylon bristles provides spark-free cutting
- Does not rust or contaminate stainless steel, aluminum, and copper workpieces
- Flexible bristles conform to complex 3D profiles without altering base dimensions
- Grit range: 80# Coarse, 120# Medium, 180#, 240# Fine Finishing

**Target Materials & Applications**: Aerospace aluminum machined parts and CNC profile deburring, Printed circuit board (PCB) scrubbing and copper contact cleaning, Antique timber grain brushing, deck cleaning, and wood distressing

**Technical Specifications**:
| grit | size | type | model | maxRpm |
| --- | --- | --- | --- | --- |
| 80# Coarse | 75mm (3") | Cup Brush | NT-WBR-112-C80 | 4,500 |
| 120# Medium | 100mm (4") | Wheel Brush | NT-WBR-112-W120 | 4,500 |

| Parameter | Specification |
| --- | --- |
| Filament Material | Nylon Impregnated with Silicon Carbide (SiC) |
| Grit Options | 80#, 120#, 180#, 240# |
| Configurations | Cup Brush (M14 / 1/4" Shank) & Wheel Brush (1/4" Shank) |

### 3.41 13-Piece Master M42 Bi-Metal Hole Saw Complete Industrial Case Set (NT-HLS-105)
- **Canonical URL**: https://newtech-sources.com/products/13-piece-master-m42-bi-metal-hole-saw-case-set
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/13-piece-master-m42-bi-metal-hole-saw-case-set.txt
- **Model / SKU**: NT-HLS-105
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 40 Sets
- **Direct RFQ**: https://newtech-sources.com/contact?product=13-Piece%20Master%20M42%20Bi-Metal%20Hole%20Saw%20Complete%20Industrial%20Case%20Set%20(NT-HLS-105)

**Overview**: Our premier commercial installation hole saw kit. The 13-piece assortment equips field crews for virtually any penetration in sheet metal, structural steel, wood studs, and plastic composite materials. Featuring 9 precision M42 8% cobalt hole saws (19mm/3/4", 22mm/7/8", 25mm/1", 32mm/1-1/4", 38mm/1-1/2", 44mm/1-3/4", 51mm/2", 64mm/2-1/2", 76mm/3"), 2 industrial quick-release arbors, extra HSS center drill, and adapter. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- 9 industrial M42 bi-metal hole saws spanning 19mm (3/4") to 76mm (3")
- Superior 4/6 variable tooth pitch delivers aggressive cuts and chatter-free operation
- Heavy-duty pin-drive arbor ensures high torque without thread binding
- Complete contractor case with custom molded slots for each component

**Target Materials & Applications**: Commercial construction, fire safety piping, HVAC ducting, Electrical switchgear panels, heavy marine fabrication, Industrial plant maintenance and facility retrofits

**Technical Specifications**:
| size | model |
| --- | --- |
| 9 Saws + Complete Accessories in Industrial Case | NT-HLS-105-SET |

| Parameter | Specification |
| --- | --- |
| Set Count | 13 Pieces |
| Hole Saw Sizes | 19, 22, 25, 32, 38, 44, 51, 64, 76mm (3/4" – 3") |
| Cutting Depth | 38mm (1-1/2") |

### 3.42 10-Piece M42 Bi-Metal Hole Saw Contractor Kit with Ejection Springs (NT-HLS-103)
- **Canonical URL**: https://newtech-sources.com/products/10-piece-m42-bi-metal-hole-saw-contractor-kit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/10-piece-m42-bi-metal-hole-saw-contractor-kit.txt
- **Model / SKU**: NT-HLS-103
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 50 Sets
- **Direct RFQ**: https://newtech-sources.com/contact?product=10-Piece%20M42%20Bi-Metal%20Hole%20Saw%20Contractor%20Kit%20with%20Ejection%20Springs%20(NT-HLS-103)

**Overview**: Engineered for high-throughput installation crews requiring zero downtime between cuts. This 10-piece set includes 6 heavy-duty M42 bi-metal hole saws (22mm/7/8", 29mm/1-1/8", 35mm/1-3/8", 44mm/1-3/4", 51mm/2", 64mm/2-1/2"), two quick-lock arbors with high-speed steel pilot bits, an ejection spring that automatically pops out wood and metal slugs upon breakthrough, and an Allen wrench. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- Spring-loaded pilot drill ejects plugs automatically for continuous drilling
- 6 core trade hole saws covering 22mm (7/8") to 64mm (2-1/2")
- Heavy-duty positive locking arbor pins eliminate chuck binding
- M42 8% cobalt teeth cut effortlessly through steel plates and timber alike

**Target Materials & Applications**: Commercial electrical switchgear and conduit installation, Water supply, hydronic heating, and drainage pipe cutouts, Commercial modular building and steel container home conversions

**Technical Specifications**:
| size | model | cuttingDepth |
| --- | --- | --- |
| 6 Saws (22–64mm) + Complete Accessories | NT-HLS-103-SET | 38mm (1-1/2") |

| Parameter | Specification |
| --- | --- |
| Set Count | 10 Pieces |
| Hole Saw Sizes | 22, 29, 35, 44, 51, 64mm (7/8", 1-1/8", 1-3/8", 1-3/4", 2", 2-1/2") |
| Accessories | 2 Arbors, Pilot Drill, Ejection Spring, Hex Key |

### 3.43 12-Piece M42 Bi-Metal Hole Saw Master Technician Assortment Set (NT-HLS-104)
- **Canonical URL**: https://newtech-sources.com/products/12-piece-m42-bi-metal-hole-saw-master-technician-kit
- **Markdown Datasheet**: https://newtech-sources.com/llms/products/12-piece-m42-bi-metal-hole-saw-master-technician-kit.txt
- **Model / SKU**: NT-HLS-104
- **Discipline**: Hole Saws
- **Minimum Order Quantity (MOQ)**: 40 Sets
- **Direct RFQ**: https://newtech-sources.com/contact?product=12-Piece%20M42%20Bi-Metal%20Hole%20Saw%20Master%20Technician%20Assortment%20Set%20(NT-HLS-104)

**Overview**: A comprehensive job-site solution for mechanical engineers, factory maintenance departments, and general contractors. Contains 8 precision M42 bi-metal hole saws ranging from 19mm (3/4") to 76mm (3"), accompanied by both small and large pin-drive arbors, a spare 1/4" HSS pilot bit, and an arbor adapter. Electron-beam welded M42 cutting edges handle tough structural metals without tooth stripping. 100% pre-shipment tested. FOB delivery from any port in China.

**Engineering Highlights**:
- 8 M42 bi-metal hole saws spanning from 19mm (3/4") up to 76mm (3")
- Includes both small (1/2"-20) and large heavy-duty pin-lock (5/8"-18) arbors
- Spare high-speed steel split-point pilot drill included in case
- Tough blow-mold carry case with secure latches and handle

**Target Materials & Applications**: Industrial plant maintenance, electrical room fit-outs, Plumbing supply, vent stacks, and sewer pipe installations, HVAC duct work, fire sprinkler line cutouts

**Technical Specifications**:
| size | model |
| --- | --- |
| 8 Saws (19–76mm) + 2 Arbors + Spare Drill + Hex Key | NT-HLS-104-SET |

| Parameter | Specification |
| --- | --- |
| Set Count | 12 Pieces |
| Hole Saw Sizes | 19, 22, 29, 35, 38, 51, 64, 76mm (3/4" – 3") |
| Tooth Material | M42 HSS 8% Cobalt |