18-Piece Cobalt Alloy HSS Bit Set
18-Piece Cobalt Alloy Steel HSS Bit Set #1890226
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18-Piece Cobalt Alloy HSS Bit Set 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
- Includes an IRWIN Pro Set Case made of durable molded ABS resin, so it can hold up to anything the jobsite throws at it. Case includes a full-length metal hinge pin for maximum durability and long life, and bit identification is simple with easy-to-read size markings.