The DeWalt® 2 x 17 x 22 in spline shank rotary hammer bit has been tested on real world jobsites to ensure that it holds up and performs well under tough conditions. The Rock Carbide™ tip maximizes carbide surface contact and a hardened core reduces breakage, so you can work confidently knowing that this hammer bit is built to last. With a U-flute design that cleans out debris and an open head to channel dust into the flutes, drilling is fast, clean and efficient even on repetitive drilling jobs. With tools that meet your standards, DeWalt® has your back. DeWALT® Guaranteed Tough® 2-Cutter Masonry Drill Bit, 2-Cutter, 2 in, 22 in Overall Length, 17 in Cutting Depth, 2 Flutes, U-Shaped Flute, 17 in Flute Length, 3/4 in Shank, Spline Shank, Rock Carbide® Point, Right Hand Cutting, Carbide Cutting Edge, Steel, Bright, Silver, Applicable Materials: Concrete and Masonry