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Irwin® Unibit® 10231CB Step Drill Bit, 1/8 in Dia Min Hole, 13 Steps, M35 HSS-Co 5, 13 Hole Sizes, 1/4 in Shank

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Irwin_Unibit_10231CB.jpg

Features

  • Radial concave flute
  • Laser etched sizes inside flute for easy and permanent hole size identification
  • 6X longer life vs the competition
  • SpeedPoint® tip for fast starts
  • Engineered with m35 cobalt steel for maximum life when drilling in tough steel
  • M35 grade cobalt HSS
  • Laser marked size
  • Geometry of single flute cutting edge drills true, round holes and provides maximum step control

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Description

Irwin® Unibit®, 10231CB, Step Drill Bit, Imperial, #1 Letter/Wire, 1/8 in Diameter Minimum Hole, 1/2 in Diameter Maximum Hole, 3-1/8 in Overall Length, 13 Steps, 1/32 in Step Depth, 13 Hole, 1 Flutes, 1/2 in, 1/4 in, 1/8 in, 11/32 in, 13/32 in, 15/32 in, 3/16 in, 3/8 in, 5/16 in, 5/32 in, 7/16 in, 7/32 in, 9/32 in, Radial Concave Flute, 1/4 in Shank, Hex Shank, SpeedPoint®, M35 Cobalt HSS Cutting Edge, M35 HSS-Co 5, Uncoated, Applicable Materials: Steel and Stainless Steel