5/16" x 7/64" Countersink
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Fuller #C4 Type “C” four flute countersink. Used to countersink and counterbore for heads of screws in woods, plastics and non-ferrous materials. Heat treated for long tool life.
The countersink is held in place with two hex-socket screws and is easily adjustable up and down the drill so only one countersink and length of drill is required for one screw size.
Cutting diameter 5/16″, drill hole size 7/64″, overall length 7/8″.
Priced and sold individually.