Dottie 4 Plus rotary hammer drill bit with SDS plus shank, has tungsten carbide tip construction and polished finish. The three spiral flutes help in removing the debris effectively. It features 1/4-Inch fraction size and drills up to 12-Inch depth. It measures 0.25-Inch Dia x 14-Inch. It is suitable for use with aggregates, concrete, masonry, brick, stone and even rebar. The drill bit meets ANSI standards.