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You're currently browsing our Solid Cobalt Drill Bits department
Steel is a tricky material to drill through. If you use the wrong bit you will make a mess and won't get the hole size you need. So, when you need to make holes in steel there's no better place to turn to than solid cobalt drill bits. These drill bits make quick work of steel, reduce walking and come in varying sizes to help you tackle your projects.

Drilling, Drill Bits and Drill Bit Sets is just one of the numerous categories of tools and accessories offered at Tools-Plus.com. Shop with confidence knowing that Tools-Plus.com is an Authorized Internet Retailer.

Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$5.39
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit 2x
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit 2x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$8.99
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit 3x
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Bosch CO2131 3x 1/16" Cobalt Jobber Length Drill Bit 3x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$11.99
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit 4x
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit 4x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$14.39
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit 8x
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Bosch CO2131 1/16" Cobalt Jobber Length Drill Bit 8x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$19.95
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick helix web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$4.28
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 10x
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 10x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$17.50
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 2x
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 2x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$5.99
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 3x
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 3x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$8.67
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 4x
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 4x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$11.16
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 5x
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Bosch CO2135 1/8" Cobalt Jobber Length Drill Bit 5x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$12.95
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Bosch CO2138 11/64" Cobalt Jobber Length Drill Bit
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Bosch CO2138 11/64" Cobalt Jobber Length Drill Bit

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$4.46
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Bosch CO2139 20x 3/16" Cobalt Jobber Length Drill Bit
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Bosch CO2139 20x 3/16" Cobalt Jobber Length Drill Bit

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$37.50
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$6.28
After Sale Savings
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 10x
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 10x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$23.99
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 2x
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 2x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$8.25
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 3x
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 3x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$9.99
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 4x
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 4x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$11.99
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 5x
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Bosch CO2139 3/16" Cobalt Jobber Length Drill Bit 5x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$13.99
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$7.19
After Sale Savings
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 10x
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 10x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$29.99
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 2x
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 2x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$11.50
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 3x
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 3x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$14.50
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 4x
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 4x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$16.50
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 5x
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Bosch CO2143 1/4" Cobalt Jobber Length Drill Bit 5x

  • Withstands high-temperature applications for extended periods of time (up to 1,100 deg.F)
  • Rigid, thick web design adds stability to bit in tough applications
  • Surface hardened to penetrate tough abrasive materials
$19.50
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Irwin 3016004 1/16" Cobalt Drill Bit
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Irwin 3016004 1/16" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$1.99
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Irwin 3016005 5/64" Cobalt Drill Bit
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Irwin 3016005 5/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$1.99
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Irwin 3016007 10x  7/64" Cobalt Drill Bit
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Irwin 3016007 10x 10x 7/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$22.44
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Irwin 3016007 12x  7/64" Cobalt Drill Bit
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Irwin 3016007 12x 12x 7/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$25.85
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Irwin 3016007 4x  7/64" Cobalt Drill Bit
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Irwin 3016007 4x 4x 7/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$11.26
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Irwin 3016007 5x  7/64" Cobalt Drill Bit
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Irwin 3016007 5x 5x 7/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$12.95
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Irwin 3016007 7/64" Cobalt Drill Bit
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Irwin 3016007 7/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$6.45
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Irwin 3016007 7/64" Cobalt Drill Bit 2x
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Irwin 3016007 7/64" Cobalt Drill Bit 2x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$6.95
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Irwin 3016007 7/64" Cobalt Drill Bit 3x
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Irwin 3016007 3x 7/64" Cobalt Drill Bit 3x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$9.38
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Irwin 3016007 7/64" Cobalt Drill Bit 6x
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Irwin 3016007 7/64" Cobalt Drill Bit 6x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$14.61
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Irwin 3016007 7/64" Cobalt Drill Bit 8x
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Irwin 3016007 7/64" Cobalt Drill Bit 8x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$18.70
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Irwin 3016008 1/8" Cobalt Drill Bit
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Irwin 3016008 1/8" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$8.50
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Irwin 3016009 9/64" Cobalt Drill Bit
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Irwin 3016009 9/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$8.50
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Irwin 3016010 5/32" Cobalt Drill Bit
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Irwin 3016010 5/32" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$7.99
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Irwin 3016012 3/16" Cobalt Drill Bit
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Irwin 3016012 3/16" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$7.99
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Irwin 3016016 1/4" Cobalt Drill Bit
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Irwin 3016016 1/4" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$8.99
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Irwin 3016016 1/4" Cobalt Drill Bit 2x
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Irwin 3016016 1/4" Cobalt Drill Bit 2x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$11.50
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Irwin 3016016 1/4" Cobalt Drill Bit 4x
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Irwin 3016016 1/4" Cobalt Drill Bit 4x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$20.76
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Irwin 3016016 1/4" Cobalt Drill Bit 8x
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Irwin 3016016 1/4" Cobalt Drill Bit 8x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$35.59
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Irwin 3016016 10x  1/4" Cobalt Drill Bit
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Irwin 3016016 10x 10x 1/4" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$42.26
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Irwin 3016016 12x  1/4" Cobalt Drill Bit
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Irwin 3016016 12x 12x 1/4" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$48.18
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Irwin 3016016 3x  1/4" Cobalt Drill Bit
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Irwin 3016016 3x 3x 1/4" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$16.39
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Irwin 3016016 5x  1/4" Cobalt Drill Bit
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Irwin 3016016 5x 5x 1/4" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$24.65
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Irwin 3016017 17/64" Cobalt Drill Bit
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Irwin 3016017 17/64" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$9.99
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Irwin 3016018 9/32" Cobalt Drill Bit
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Irwin 3016018 9/32" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$9.99
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Irwin 3016020 5/16" Cobalt Drill Bit 2x
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Irwin 3016020 5/16" Cobalt Drill Bit 2x

  • 135-degree point begins drilling immediately, minimizing bit walk
  • Tough metal drilling, including heavy-duty abrasive alloy metal drilling on hardened steel
  • 5-1/2 cobalt for higher heat and abrasion resistance
$10.75
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Irwin 3016020 5/16" Cobalt Drill Bit 4x
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Irwin 3016020 5/16" Cobalt Drill Bit 4x

  • 135-degree point begins drilling immediately, minimizing bit walk
  • Tough metal drilling, including heavy-duty abrasive alloy metal drilling on hardened steel
  • 5-1/2 cobalt for higher heat and abrasion resistance
$17.50
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Irwin 3016020 5/16" Cobalt Drill Bit 8x
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Irwin 3016020 5/16" Cobalt Drill Bit 8x

  • 135-degree point begins drilling immediately, minimizing bit walk
  • Tough metal drilling, including heavy-duty abrasive alloy metal drilling on hardened steel
  • 5-1/2 cobalt for higher heat and abrasion resistance
$29.95
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Irwin 3016128 7/16" Cobalt Drill Bit
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Irwin 3016128 7/16" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$8.99
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Irwin 3016130 15/32" Cobalt Drill Bit
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Irwin 3016130 15/32" Cobalt Drill Bit

  • 5% cobalt for higher heat and abrasion resistance.
  • Heavy-duty web construction for strength and durability.
  • 135 degree split point begins drilling immediately, minimizing bit "walk".
$11.95
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Irwin 3016130 15/32" Cobalt Drill Bit 2x
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Irwin 3016130 15/32" Cobalt Drill Bit 2x

  • 5% cobalt for higher heat and abrasion resistance.
  • Heavy-duty web construction for strength and durability.
  • 135 degree split point begins drilling immediately, minimizing bit "walk".
$16.50
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Irwin 3016130 15/32" Cobalt Drill Bit 4x
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Irwin 3016130 15/32" Cobalt Drill Bit 4x

  • 5% cobalt for higher heat and abrasion resistance.
  • Heavy-duty web construction for strength and durability.
  • 135 degree split point begins drilling immediately, minimizing bit "walk".
$29.00
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Irwin 3016130 15/32" Cobalt Drill Bit 8x
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Irwin 3016130 15/32" Cobalt Drill Bit 8x

  • 5% cobalt for higher heat and abrasion resistance.
  • Heavy-duty web construction for strength and durability.
  • 135 degree split point begins drilling immediately, minimizing bit "walk".
$53.50
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Irwin 3016132 1/2" Cobalt Drill Bit
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Irwin 3016132 1/2" Cobalt Drill Bit

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
$12.95
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View discontinued Solid Cobalt Drill Bits

Irwin 3016009 9/64" Cobalt Drill Bit 8x
Irwin Industrial Tools Logo

Irwin 3016009 9/64" Cobalt Drill Bit 8x

  • Built with a heavy duty spiral flute design for faster chip ejection
  • Constructed of M-42 8 percent cobalt high speed steel for great abrasive resistance with tough metals
  • Shorter cutting lips reduce torque required for drilling in high tensile strength materials
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