IRWIN #4 Unibit Self-Starting Stairstep Bit, 12-Step, 3/16" to 7/8" Dia., 1/8" Depth





$52.09 / EA
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  • Stairstep design.
  • SpeedPoint tip.
  • Patented single-flute edge.
  • Hex-shaped shank.
  • For use on stainless steel, copper, brass, aluminum, plastic and laminates.

Drill a range of holes without changing bits when you equip with a stairstep bit. SpeedPoint tip penetrates quickly and cleanly without the walking issues common among alternative point designs. Patented single-flute edge provides precise depth control though all size steps. Hex-shaped shank enables secure, slip-free lock-down. Self-starting bit may be used on stainless steel, copper, brass, aluminum, plastic, laminates and wood.

Includes one conical stairstep bit.


Global Product Type Drill Parts and Accessories-Stairstep Bit
Material Steel
Drill Bit Range [Max] 7/8"
Drill Bit Range [Min] 3/16"
Pre-Consumer Recycled Content Percent 0%
Post-Consumer Recycled Content Percent 0%
Total Recycled Content Percent 0%
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