Machinists File, Material Applications Iron, Mild Steel, Plastics, Wood, File Coarseness Smooth , File Style American Pattern File, File Type Machinists File, Profile Shape Triangular, Face Style Single-, Edge Style Single, File Length without Tang 6 in, Thickness 9/32 in, File Width 1/4 in, Number of Edges 3, Rigidity Rigid, Taper Tapered Slightly Towards Point, File Body Finish Natural, File Material Natural