Fuller C9 COUNTERSINK 3/8 X 3/16


3/8"CD X 3/16" DRILL HOLE SIZE. The Type C countersink is designed for use in all woods, plastics, and non- ferrous metals. The countersink is held in place with 2 hex socket set screws fastened into the flutes of the drill. This countersink can be mounted on taper point, brad point, and regular point drills.