Irwin 1/2 In. x 4 In. x 6 In. Masonry Drill Bit
Our rotary percussion-straight shank fits all hammer drills with 3-jaw or Jacobs chuck. It is made to ANSI specifications, and is up to 150% faster than competitive bits.
Chrome vanadium shaft through-hardened to 50-53Hr C
Patented flute geometry removes dust from the hole quicker for fast drilling and long life
Shot-peened, double-tempered finish reduces breakage
Hot isostatically pressed to extend life and resist breakage