Irwin Tools IRWIN Drill Bit Set, Cobalt Alloy Steel, Jobber, Fractional, 21-Piece (63221)

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Product description

  • Drill bits are made of M-42 5% cobalt high-speed steel for super abrasive resistance in tough metals
  • Shorter cutting lips reduce torque for drilling in high-tensile-strength materials
  • Cobalt drill bit set comes in a metal index case

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