This IRWIN Straight-Shank Rotary Percussion Drill Bit fits most hammer drills with a 3-jaw or Jacobs chuck. Designed for speed, this powerful drill bit features special flute geometry to quickly remove dust from the hole for fast drilling and long life. With a chrome vanadium shaft through-hardened to 5-53HrC, this masonry bit will hold up under intense conditions.
Made to ANSI specifications, the IRWIN 326003 - 3/16 x 4-1/2 x 6 Straight Shank Masonry Bit is the next generation straight shank hammer drill bit which delivers more performance than ever. The patented flute design speeds dust removal for fast drilling and long life, while the shot-peened finish increases surface durability reducing the potential for breakage. This offering of straight shank masonry bits demonstrated IRWIN's commitment to the line and the professions who rely on them.