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IRWIN® Unibit® 1/4" Hex Shank Titanium Nitride Coated Step Drill Bit

Airgas Part #:VIS15101

Manufacturer Part #:15101ZR

$41.06 /Each
Package Size Options
$205.30 Carton 5 Each / Carton
Enter multiples of 5 Each

Item Details

  • IRWIN® Unibit® Size 1T Hole 1/8" - 1/2" Step Drill Bit with 1/4" hex type shank is made of titanium nitride to render extended tool life when drilling hard materials. Drill bit with 1/32" increments features single-flute cutting edge for greater control through steps and new SpeedPoint tip that penetrates faster than previous Unibits and prevents walking. 13 Steps drill bit with 1/8" maximum material thickness and single flute cutting edge for greater control through steps is 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
  • 3 flatted shank prevents slipping in drill chuck
  • New speedpoint tip penetrates faster than previous unibits and prevents walking
  • Titanium Nitride coating resists heat and friction
  • Extending the cutting edge life up to six times longer than other high speed steel step drill bit
  • SpeedPoint® tip for fast start

Product Attributes

Drill Type

» Step Drill Bit

Shank Size

» 1/4"

Shank Style

» Hex


» 1

Drill Material

» High Speed Steel

Drill Coating

» Titanium Nitride

Trade Name

» Unibit®