Irwin Rotary Percussion - Straight Shank 5/8" x 8" x 12" Spade Bit Set designed for hand threading work

designed for hand threading work in a variety of materials

or create an interesting detail on built-up molding

Reduced area above the flute prevents the drill bit from binding while drilling-the full usable length can be utilized

Higher level of protection from side impacts

1/2" overall diameter

Irwin Rotary Percussion - Straight Shank 5/8" x 8" x 12" Spade Bit Set designed for hand threading workRotary 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