Westward Machinists File 1NFT1 These round files have double-cut teeth that aggressively abrade material by using two sets of diagonal rows of teeth that slant in opposite directions to remove material more quickly and leave a rougher finish than single-cut teeth. Handle Length / 10 inch File Body Finish / Natural Profile Shape / Round Face Cut Style / Double-Cut Edge Cut Style / Safe File Diameter / 3/8 inch Taper / Taper Towards Point File Coarseness / Bastard Cut File Length without Tang / 10 inch Number of Cut Edges / 1