Simpson Strong-Tie Masonry Drill, 13/16 in Drill Bit, 21 in Overall Length, 17 in Cutting Depth, Spiral Flute, 17 in Flute Length, SDS-Max Shank, Quad Head Point, Carbide Cutting Edge, Chromium Nickel Molybdenum Steel Alloy, Applicable Materials: Concrete and Masonry