Machinists File Material Applications Iron Mild Steel Plastics Wood File Coarseness Second Cut File Style American Pattern File File Type Machinists File Profile Shape Round Face Cut Style Single-Cut Edge Cut Style Safe File Length without Tang 8 in Thickness 9/32 in File Diameter 5/16 in Number of Cut Edges 4 Rigidity Rigid Taper Tapered Slightly Towards Point Teeth per Inch 30 File Body Finish Natural