Built for electricians and contractors who need clean, repeatable cuts, this IDEAL® bi-metal hole saw combines M42 high-speed steel with 8% cobalt for dependable strength and wear resistance. Its deep-gullet tooth design clears chips efficiently to help reduce binding and deliver faster drilling through common job-site materials. Use it for electrical rough-ins, conduit penetrations, and general installation work in stainless steel, sheet metal, non-ferrous metals, wood, and plastics.

Specifications

Cutting diameter 4-1/8 in
Standard cutting depth 1-7/8 in, suitable for cutting through a 2x4 in a single pass
Construction M42 high-speed steel with 8% premium cobalt content and a rigid solid back plate
Tooth design Extreme deep-gulleted, fleem-ground teeth with 4/6 variable-pitch geometry
Materials Stainless steel, sheet metal, aluminium, copper, brass, wood, engineered wood, nail-embedded wood, and plastics
Performance Up to 1.2x faster drilling times compared with other brands; variable-pitch geometry helps reduce harmonic noise and tooth stripping
Back-plate features Diamond cutouts on sizes from 7/8 in to 6 in; cat-eye openings on sizes from 2 in to 6 in for visibility and quick plug removal
Job-site applications Electrical rough-ins, conduit and cable penetrations, and general installation work