Precision File, Material Applications Aluminum, Brass, Bronze, Steel, Tin, File Coarseness Smooth , File Style Swiss Pattern File, File Type Precision File, Profile Shape Round, Face Style Double-, Edge Style Double, File Length without Tang 8 in, Thickness 5/16 in, File Diameter 5/16 in, File Width 5/16 in, Number of Edges 4, Rigidity Rigid, Taper Taper Towards Point, File Body Finish Natural, Container Type Box, Features Used for Enlarging and Rounding Out Holes