
Sheet Metal Thin-Gauge Bi-Metal Hole Saw with Safety Depth Stop Collar
Specialized shallow-depth sheet metal hole saw with safety flange stop collar to prevent over-penetration into electrical wiring and internal components behind metal panels.

9-Piece M42 Bi-Metal Hole Saw Set for Electricians & Plumbers
SKU: NT-HLS-102
Est. 1998 · Unit 9F-H, East Building, Haijing Center, NO.144(M) Huangpu AVE, Guangzhou, China
Complete 9-piece contractor set containing 6 essential M42 bi-metal hole saws (19mm–57mm / 3/4"–2-1/4"), two quick-lock arbors, and thread adapter in a heavy blow-mold case.
| 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 |
| size | model | cuttingDepth |
|---|---|---|
| 6 Saws (19–57mm) + 2 Arbors + 1 Adapter | NT-HLS-102-SET | 38mm (1-1/2") |
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
Process-by-requirement custom OEM/ODM manufacturing confirmed against buyer drawings prior to production.
Select individual or multiple dimensional models below to append directly to your B2B RFQ requisition.
| size | model | cuttingDepth | RFQ Requisition | |
|---|---|---|---|---|
| 6 Saws (19–57mm) + 2 Arbors + 1 Adapter | NT-HLS-102-SET | 38mm (1-1/2") |
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
Complete 9-piece contractor set containing 6 essential M42 bi-metal hole saws (19mm–57mm / 3/4"–2-1/4"), two quick-lock arbors, and thread adapter in a heavy blow-mold case.
Manufacturing processes and technical parameters are tailored according to customer requirements. Tell us your target material, dimensions, drawings, and order quantity, and we configure the construction, bond/alloy grade, and finishing to match.
We support flexible FOB and CIF delivery at any port in China (including Guangzhou, Shenzhen, Ningbo, Shanghai, Qingdao, Tianjin, and Xiamen) with 100% pre-shipment inspection before dispatch.
Yes. Custom laser marking, color finishes, private-label retail or industrial packaging, and barcode labeling are agreed with you before production.
Cross-Referenced Tooling

Specialized shallow-depth sheet metal hole saw with safety flange stop collar to prevent over-penetration into electrical wiring and internal components behind metal panels.

Heavy-duty hole saw arbor mandrels featuring hardened alloy steel drive pins, 1/2"-20 & 5/8"-18 threads, and premium HSS center pilot drills for slip-free power transmission.

Die-cast aluminum I-beam hacksaw frame (300mm / 12" blade length, up to 150kg / 330 lbs blade tension) paired with HSS M2 bi-metal blades and forged masonry cold chisels.

Industrial continuous rim blade engineered for high-speed wet or dry cutting across concrete, masonry, granite, and stone. Available in both Metric (105mm–400mm) and Imperial (4"–16") diameters with custom bond hardness.