Westward 1NFR8B Machinists File Double-cut teeth on these round files aggressively abrade material. The two crisscrossing sets of diagonal rows of teeth slant in opposite directions to remove material more quickly and leave a rougher finish than single-cut teeth. Handle Length / 6 inch File Body Finish / Natural Profile Shape / Round Face Cut Style / Double-Cut Edge Cut Style / Safe File Diameter / 1/4 inch Taper / Taper Towards Point File Coarseness / Bastard Cut File Length without Tang / 6 inch Number of Cut Edges / 1