With a carbide tip to extend bit life and a U-flute to clean debris while you work, DeWALT® spline masonry drill bits deliver quick, efficient drilling. A hardened core helps to reduce bit breakage and an open head design channels dust into flutes for fast drilling. DeWALT® Guaranteed Tough® Masonry Drill Bit, 2-Cutter, 1/2 in Drill Bit, 16 in Overall Length, 11 in Cutting Depth, 2 Flutes, U-Shaped Flute, 11 in Flute Length, 3/4 in Shank, Spline Shank, Rock Carbide® Point, Right Hand Cutting Direction, Carbide Cutting Edge, Steel, Bright, Silver, Applicable Materials: Concrete and Masonry