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 18 in) 6 Point Metric Impact 18 in) 6 Point Metric Impact Socket 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 Engineered with a specialized thin wall body configuration 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