Warding File, Material Applications Aluminum, Brass, Bronze, Steel, Tin, File Coarseness Second , File Style American Pattern File, File Type Warding File, Profile Shape Rectangular, Face Style Double-, Edge Style Single, File Length without Tang 4 in, Thickness 3/64 in, File Width 3/8 in, Number of Edges 4, Rigidity Rigid, Taper Taper Towards Point, Teeth per Inch 42, 46, 66, 72, File Body Finish Natural, Container Type Box, Features Exclusive Wavy Tooth Design