Before turning Pen barrels, the ends of the blanks must be cut square to the brass tube. This tool constists of 1) A Pilot to clean excess glue out of the brass tubes and keep the cutter head square with the tube and 2) A cutter-head to trim the ends of the blank. The Barrel Facing Tool can be used in any 3 or 4 jawed chuck. i.e., hand drill, drill press, or lathe. A 5/8" cutter head and a 3/4" cutter head are availible. Cutter heads are made from hardened tool steel. The Pilots are interchangable.