Built for clean, efficient cuts on demanding jobs, this bi-metal hole saw combines M42 high-speed steel with 8% cobalt for strong wear resistance and reliable drilling performance. Deep gulleted teeth clear chips quickly to help reduce binding, while the 1-7/8-inch cutting depth can pass through a 2x4 in one cut. It handles stainless steel, sheet metal, aluminium, copper, brass, wood, engineered wood, nail-embedded wood, and plastics for versatile work on site.

Specifications

Construction M42 high-speed steel with 8% premium cobalt content
Cutting depth 1-7/8 inches, suitable for cutting through 2x4s in a single pass
Tooth design Deep gulleted, fleam-ground teeth with 4/6 variable pitch geometry
Performance features Designed for efficient chip removal, reduced binding, lower harmonic noise, and reduced tooth stripping
Compatible materials Stainless steel, sheet metal, aluminium, copper, brass, wood, engineered wood, nail-embedded wood, and plastics
Back plate features Diamond cutouts on sizes from 7/8 to 6 inches; cat-eye openings on sizes from 2 to 6 inches for visibility and plug removal