Irwin Pulverizer Masonry Drill Bit 3/16" X 4" 326002 - (Box of 5)

The Irwin Pulverizer Masonry Drill Bit 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.