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Pre-drill and countersink to drive screws flush with the material surface or deep hole counter boring for driving screw heads below the surface. Ultra-sharp cutting flute clears chips efficiently and leaves a clean, smooth hole. Adjustable drill bit length for desired screwed depth, and features a flattened shank for a no-slip countersink connection.
#6 countersink is a 3/32” drill with a countersink diameter of 5/16. This would use a 5/16 plug cutter
#8 countersink is a 7/64” drill with a countersink diameter of 5/16. This would use a 5/16 plug cutter
#10 countersink is a 1/8” drill with a countersink diameter of 3/8”. This would use a 3/8 plug cutter
#12 countersink is a 1/8” drill with a countersink diameter of 7/16”. This would use a 7/16 plug cutter
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.