DEWALT DW5468 1-1/8" X 8" X 10" Rock Carbide SDS+ Hammer Bit; features a ROCK CARBIDE tip which maximizes carbide surface contact for longer bit life. The four flute design cleans debris out for fast, efficient drilling. For use with electric or cordless rotary hammers. Commonly used for drilling holes in poured concrete and other masonry up to 1-1/8" diameter. Diameter 1-1/8", Usable Length 8", Overall Length 10"