TEKTON 6696 4-Way Shoe Rasp File, 8-Inch Versatile machinists file is four tools in one: flat mill, half-round second-cut, flat wood rasp, half-round wood rasp Flat mill file smooths edges and sharpens blades Half-round second-cut file smooths inside surfaces of contoured openings and holes Flat wood rasp roughly finishes wood, leather, soft metals, and soft plastics Half-round wood rasp roughly shapes interior contours