
9-Piece M42 Bi-Metal Hole Saw Set for Electricians & Plumbers
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.

12-Piece M42 Bi-Metal Hole Saw Master Technician Assortment Set
SKU: NT-HLS-104
Est. 1998 · Unit 9F-H, East Building, Haijing Center, NO.144(M) Huangpu AVE, Guangzhou, China
12-piece master hole saw set providing 8 M42 bi-metal hole saws (19mm–76mm / 3/4"–3"), two heavy-duty mandrels, spare pilot drill, and hex key in rugged carrying case.
| Set Count | 12 Pieces |
|---|---|
| Hole Saw Sizes | 19, 22, 29, 35, 38, 51, 64, 76mm (3/4" – 3") |
| Tooth Material | M42 HSS 8% Cobalt |
| size | model |
|---|---|
| 8 Saws (19–76mm) + 2 Arbors + Spare Drill + Hex Key | NT-HLS-104-SET |
Industrial plant maintenance, electrical room fit-outs, Plumbing supply, vent stacks, and sewer pipe installations, HVAC duct work, fire sprinkler line cutouts
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 | RFQ Requisition | |
|---|---|---|---|
| 8 Saws (19–76mm) + 2 Arbors + Spare Drill + Hex Key | NT-HLS-104-SET |
Industrial plant maintenance, electrical room fit-outs, Plumbing supply, vent stacks, and sewer pipe installations, HVAC duct work, fire sprinkler line cutouts
12-piece master hole saw set providing 8 M42 bi-metal hole saws (19mm–76mm / 3/4"–3"), two heavy-duty mandrels, spare pilot drill, and hex key in rugged carrying 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

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.

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.