5/16 in, 4 in, 6 in

Features: Fits all hammer drills with 3-jaw or Jacobs chuck | Chrome vanadium shaft through-hardened to 50-53HrC | Patented flute geometry removes dust from the hole quicker for fast drilling and long life | Up to 150% faster than other competitive bits | Shot-peened, double-tempered finish reduces breakage | Hot isostatically pressed to extend life and resist breakage | Copper braze material gives high heat resistance for reduced tip loss | All tips made to ANSI specifications