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IRWIN

Irwin Speedbor Tapered Countersink Wood Drill Bit, #4, 3 3/8-In

Irwin Speedbor Tapered Countersink Wood Drill Bit, #4, 3 3/8-In
Irwin Speedbor Tapered Countersink Wood Drill Bit, #4, 3 3/8-In
Irwin Speedbor Tapered Countersink Wood Drill Bit, #4, 3 3/8-In
Irwin Speedbor Tapered Countersink Wood Drill Bit, #4, 3 3/8-In



  • Features a tapered drill and wide flutes that drill fast, clean pilot holes, and ensure a tight fit for screws
  • Has an adjustable four-cutter counterbore attachment that cuts fast and clears chips quickly for fast, smooth countersinking applications
  • Counterbore feature attaches flats on shank with two hex screws for a secure fit, and can be adjusted for controlled pilot hole depth
  • Fits all standard 1/4-In quick-change chucks, including impact drills
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