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Irwin Unibit 3/16" to 1/2" High Speed Steel Step Dril Bit

Brand: Irwin Mfg#: 10232
Product#: 17310232
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WARNING: Cancer and Reproductive Harm -  www.P65Warnings.ca.gov.

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Heavy duty step drill bits are fast at drilling holes in various materials; wood, steel, plastic, etc.


  • Also available with (TiN) coating for longer life
  • Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
  • Single flute cutting edge for greater control through steps
  • New speedpoint tip penetrates faster than previous Unibits and prevents walking
  • Hex shank prevents slipping in drill chuck


  • Brand: Irwin
  • Product Line: Unibit
  • Cutting Edge Material: High Speed Steel
  • Point Type: SpeedPoint
  • Shank Size: .25 in
  • Diameter: 0.1875 - 0.5 in in
  • Style: Self Starting
  • Wire Size: NO 2
  • Number of Flutes: 1
  • Finish: Tin Coated
  • Number of Steps: 6
  • Shank Type: Hexagonal
  • Applicable Materials: Stainless Steel, Copper, Brass, Aluminum, Plastic and Laminates
  • Material Thickness: .125 in
  • Prop65: WARNING: Cancer and Reproductive Harm -
  • Overall Length: 77 in