Milwaukee® Rotary Hammer Drill Bit, 4-Cutter, 1-1/8 in Drill Bit, 21 in Overall Length, 16 in Cutting Depth, Spiral Flute, 17 in Flute Length, 45/64 in Shank, SDS-Max® Shank, Centering Point, Right Hand Cutting Direction, Carbide Cutting Edge, Carbide, Bright, Silver, Applicable Materials: Block, Brick, Concrete and Reinforced Concrete