Fits all spline rotary hammersPatented flute geometry removes dust from the hole quicker for fast drilling and long lifeShot-peened, double-tempered finish reduces breakageCopper braze material gives high heat resistance for reduced tip loss All tips made to ANSI specificationsChrome vanadium shaft through-hardened to 50-53HrC Diameter- 3/4"Twist Length- 22" Overall Length- 27"