Drill the pilot hole and countersink or counterbore for tapered wood screws or as a clearance hole for straight screws in one step.
The countersink is made of thru-hardened alloy steel for long cutting life
New design, now featuring a reusable hex shank for use with round shank tapered twist drills.
Round-shank HSS Tapered twist drill set in a precision machined hex shank for use with quick change chucks
Large, hardened set screws ensure a firm hold on countersink/twist drill

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