Diablo 1-1/8" x 31" x 36" Rebar Demon SDS-Max 4-Cutter Carbide Head Hammer Drill BitDiameter: 1 1 8" Length: 36" Shank: SDS Max Working Length: 31" Head Type: Full Carbide Head Number of Cutters: 4. 0 Tools: SDS Max Rotary Hammer Drill Materials: Reinforced Concrete; Concrete; Rebar; Brick Block Diablo's revolutionary, most complete range of SDS Plus and SDS Max Rebar Demon 4 cutter full carbide head hammer drill bits are the only bits designed to be the most durable, fastest and coolest solutions on the market. The Rebar Demon bits