Features A file is a tool used to remove fine amounts of material from a workpiece. It is common in woodworking, metalworking, and other similar trade and hobby tasks. STONY files are made from high-quality hardened steel bars of rectangular, square, triangular, or round cross-section, with one or more surfaces cut with sharp, generally parallel teeth. A narrow, pointed tang at one end, to which a handle may be fitted. Precision Machine Cut Teeth Special Milled File Extra Strong Handle Length / 300 mm, 12" W / 21.6