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IRWIN 3/16-in - 7/8-in #4 Step Drill Bit

  • IRWIN 3/16-in - 7/8-in #4 Step Drill Bit

IRWIN 3/16-in - 7/8-in #4 Step Drill Bit

Item #: 159779 |  Model #: 10234CBSM

4.67 / 5 9 Reviews

3/16-in - 7/8-in #4 Step Drill Bit

  • 12 hole sizes
  • M35 grade cobalt HSS
  • High heat and abrasion resistance
  • Longest cutting edge life
  • Single-fluted cutting edge for greater control and rounder holes
  • Ideal for drilling holes in thin materials such as mild steel, copper, brass, aluminum, plexiglass, wood and laminates
  • 3-flatted shank won't slip in chuck
  • SpeedPoint tip for fast starting
  • Laser marked sizes won't wear off with use
Bit Material Cobalt
Number of Hole Sizes 12
Shank Style Hex
Shank Size 3/8-in
Diameters of Holes Drilled 3/16"-7/8" (1/16" steps)
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