WoodOwl Countersink/Counterbore for #10 Wood Screw
This combination drill and countersink/counterbore bit from WoodOwl drills the hole and creates the countersink or counterbore for a #10 wood screw, all in one step. The tapered bit acts as both a pilot bit and drill bit and is machined with elongated flutes for fast and clean chip clearance. Both the drill and countersink are hardened, sharpened and machined to very precise tolerances.
The depth of the drill hole, countersink, and counterbore are adjustable using the hex socket set screws on both the countersink and back up stop collar.