Diablo Rotary Hammer Core Bit DMAPLCC1070 2 11 16 Inch Carbide Tipped Thin Wall Cutter (SDS Plus 3 Depth Concrete Brick Block Conduit Drilling) Spade Robust All Metal Ratcheting Chuck: Heavy duty Robust All Metal Ratcheting Chuck: Heavy duty 1 2" metal keyless chuck on the hammer drill provides superior bit retention and resists jaw slippage under high torque loads overlapping grid pattern across the workpiece The Diablo DMAPLCC1070 2 11 16 Inch SDS Plus Carbide Tipped Thin Wall Core Bit delivers professional grade mechanical penetration rates when boring clean utility pathways through structural concrete 0 in Cutting Depth 3