Machinists File, Material Applications Iron, Mild Steel, Plastics, Wood, File Coarseness Bastard , File Style American Pattern File, File Type Machinists File, Profile Shape Rectangular, Face Style Double-, Edge Style Single, File Length without Tang 12 in, Thickness 9/32 in, File Width 1 1/4 in, Number of Edges 4, Rigidity Rigid, Taper Regular Taper, File Body Finish Natural, File Material Natural