
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.

10-Piece M42 Bi-Metal Hole Saw Contractor Kit with Ejection Springs
SKU: NT-HLS-103
Est. 1998 · Unit 9F-H, East Building, Haijing Center, NO.144(M) Huangpu AVE, Guangzhou, China
10-piece industrial M42 bi-metal hole saw set featuring 6 popular commercial cutting sizes, 2 mandrels with center drills, pilot spring ejection, and blow-mold case.
| 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 |
| size | model | cuttingDepth |
|---|---|---|
| 6 Saws (22–64mm) + Complete Accessories | NT-HLS-103-SET | 38mm (1-1/2") |
Commercial electrical switchgear and conduit installation, Water supply, hydronic heating, and drainage pipe cutouts, Commercial modular building and steel container home conversions
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 (22–64mm) + Complete Accessories | NT-HLS-103-SET | 38mm (1-1/2") |
Commercial electrical switchgear and conduit installation, Water supply, hydronic heating, and drainage pipe cutouts, Commercial modular building and steel container home conversions
10-piece industrial M42 bi-metal hole saw set featuring 6 popular commercial cutting sizes, 2 mandrels with center drills, pilot spring ejection, and 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.

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.

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.

Extended-life knotted wire cup brush equipped with a metal bridle band that controls wire flare; remove the bridle ring once wire wears down to expose a fresh cutting zone.