Machinists File, Material Applications Aluminum, Brass, Bronze, Steel, Tin, File Coarseness Bastard , File Style American Pattern File, File Type Machinists File, Profile Shape Triangular, Face Style Single-, Edge Style Single, File Length without Tang 4 in, Thickness 15/64 in, File Width 1/4 in, Number of Edges 3, Rigidity Rigid, Taper Taper Towards Point, Teeth per Inch 42, 47, 63, File Body Finish Natural, Container Type Box