Machinists File, Material Applications Aluminum, Brass, Bronze, Steel, Tin, File Coarseness Bastard , File Style American Pattern File, File Type Machinists File, Profile Shape Round, Face Style Double-, Edge Style Double, File Length without Tang 8 in, Thickness 5/16 in, File Diameter 5/16 in, File Width 5/16 in, Number of Edges 4, Rigidity Rigid, Taper Taper Towards Point, Teeth per Inch 22, File Body Finish Black Oxide, Container Type Box