Counterbore 909 3-1/4"

  • SKU: MIT 909-5216
  • Unit: EA
  • $136.89
  • List Price: $161.05
  • You Save: 15.00%


  • Counter-bore for use in all types of wood.
  • Use with Mag-Bit Shark bit or MAG303DLX, 357DLX, 735, 715 and 710 auger bits 5/8” diameter or larger to drill clearance holes for bolts and countersink the head and washer in one action.
  • Securely attaches to bit with a heavy duty set screw.
  • Six super sharp teeth on the outer diameter cut a clean hole and leave a smooth finish at the bottom of the workpiece.
  • Packaged in a clear plastic clamshell

Designed to work with
MAG-BIT’s Countershark counter-bore tool, these 9" bits have a flat on one side of the shaft to accommodate the set screw on the Countershark.

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