Drillco Masonry Drill, Imperial, Series: 1600A, 1/8 in Drill Bit, Rotary Percussion and Hammer Drilling, 3 in Overall Length, 1-1/2 in Cutting Depth, Spiral Flute, 1-1/2 in Flute Length, 1/8 in Shank, Round Shank, Right Hand Cutting Direction, Carbide Cutting Edge, Black/Gold, Applicable Materials: Granite, Marble, Concrete, Super Concrete, Polyester Glass, Hard Steel and Reinforced Products