3.5 Inch Hole Saw, 3 1 /2 Hole Saw, M42 HSS Bi-Metal Hole Cutter, Triangular Shank Hole Saw Drill Bit with Spring for Wood, Plywood, Plastic, Gypsum Board, Various Thin Metal Sheet

Features

• 3.5 INCH / 3-1/2 INCH (89MM) DIAMETER Perfect size for 4-inch can lights, recessed lighting, downlights, electrical boxes, conduit, and plumbing access. A commonly used size for residential and commercial electrical installations
• M42 BI-METAL WITH 8% COBALT Premium M42 high-speed steel teeth with 8% cobalt content for exceptional hardness, heat resistance, and wear resistance. Cuts through stainless steel, aluminum, thin metal sheets, wood, plastic, and drywall with ease
• TRIANGULAR SHANK FOR SLIP-FREE POWER Triangular shank design provides positive engagement in drill chucks, preventing slippage under heavy torque. Delivers maximum power transfer for consistent performance on tough materials
• SPRING EJECTOR FOR AUTOMATIC SLUG REMOVAL Integrated spring automatically pushes cut waste out after drilling, eliminating manual cleanup. Allows continuous cutting, reduces downtime, and protects teeth from debris buildup
• COMPLETE WITH ARBOR & PILOT BIT Ready to use right out of the box. Includes high-quality arbor and pilot bit for accurate centering and wobble-free starts. Quick-change design for easy attachment and removal