Unibit Cobalt Step Drill

Irwin Tools

SKU / Product InfoQuantity
10220CB
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#20, Hole Size: 9/16" - 1", Hole #: 8 steps, 1/16" Hole Enlarging
10231CB
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#1, Hole Size: 1/8" - 1/2", Hole #: 13 steps, 1/32" Increments
10232CB
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#2, Hole Size: 3/16" - 1/2", Hole #: 6 steps, 1/16" Increments
10233CB
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#3, Hole Size: 1/4" - 3/4, Hole #: "9 steps, 1/16" Increments
10234CB
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#4, Hole Size: 3/16" - 7/8", Hole #: 12 steps, 1/16" Increments
10239CB
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#9, Hole Size: 7/8" and 1-1/8", Hole #: 2 steps, for 1/2" and 3/4 KO
11101CB
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#1M, Hole Size: 4mm - 12mm, Hole #: 9 steps, 1mm Increments
11102CB
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#2M, Hole Size: 4mm - 12mm, Hole #: 5 steps, 2mm Increments
11103CB
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#3M, Hole Size: 6mm - 18mm, Hole #: 7 steps, 2mm Increments
11104CB
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#4M, Hole Size: 4mm - 22mm, Hole #: 10 steps, 2mm Increments

Quick Overview

  • 6X Longer life vs. the competition
  • M35 grade Cobalt HSS
  • Radial concave flute
  • Speedpointâ„¢ tip
  • Laser marked sizes
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Additional Information


Manufacturer: Irwin Tools
For More Information on the Unibit Cobalt Step Drill, [Click Here] to Link to Manufacturer Web Site