Machinists File, Material Applications Aluminum, Brass, Bronze, Steel, Tin, File Coarseness Second , File Style American Pattern File, File Type Machinists File, Profile Shape Rectangular, Face Style Double-, Edge Style Single, File Length without Tang 4 in, Thickness 5/64 in, File Width 7/16 in, Number of Edges 4, Rigidity Rigid, Taper Taper Towards Point, Teeth per Inch 26, 31, 61, File Body Finish Natural, Container Type Box, Features Hogging, Wavy Tooth Design