DeWalt® solid Rock Carbide™ SDS Plus® drill bit delivers the best in durability and long life, so you can work confidently without worrying about the tool. With four cutter heads and two times more carbide than competitive two cutter bits, this bit is tough across multiple drilling operations, even in reinforced concrete. An innovative bonding system attaches the tip to the flute and ensures that the bit will last. DeWalt® strives to increase your efficiency on the job and the SDS Plus® bit has a 4-flute design that removes debris while you work. Black+Decker® Guaranteed Tough® Masonry Drill Bit, 2-Cutter, 5/8 in Drill Bit, Round Cutting, 8 in Overall Length, 6 in Cutting Depth, 4 Flutes, Spiral Flute, 6 in Flute Length, 25/64 in Shank, SDS-Plus® Shank, Rock Carbide® Point, Right Hand Cutting Direction, Carbide Cutting Edge, Steel, Bright, Silver, Applicable Materials: Concrete and Masonry