Irwin Rotary Percussion - Straight Shank 1/2" x 8" x 12" Size:1/2" x 8" x 12" Precision-ground edges on the blades

Precision-ground edges on the blades ensure a tight grip on each cut for superior cutting quality

diameter mounting flange and inlet connection

The head and handle are forged in one piece

Designed for commercial usage

Irwin Rotary Percussion - Straight Shank 1/2" x 8" x 12" Size:1/2" x 8" x 12" Precision-ground edges on the bladesRotary Percussion Straight Shank Features: 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