Irwin 324064 Drill Bit 7/8 x 18 x 23Spline 4C UVJ4_Z0SOY29

Irwin Spline Multi-Cutter Drill Bits Fits all spline rotary hammers. Patented 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.