Irwin Rotary Percussion - Straight Shank

• 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
• All tips made to ANSI specifications