IRWIN BM324026 Hammer Drill Bit, 7/8 in Dia, 23 in OAL, Twist Flute, 2-Flute, 5 in Dia Shank, Spline Shank

Flute geometry removes dust from the hole quicker for fast drilling and long life. Shot peened, double-tempered finish reduces breakage. Copper braze material gives high heat resistance for reduced tip loss. Chrome vanadium shaft through-hardened to 50-53 HrC. Fits all spline rotary hammers.