From rough-shaping wood to sharpening blades, the versatile TEKTON 4-Way Shoe Rasp File is a combination of four tools in one to handle a wide variety of work. The flat mill file smooths edges and sharpens blades. A half-round second-cut file smooths the inside surfaces of contoured openings and holes. The flat wood rasp rough-finishes wood, leather, soft metals, and soft plastics. A half-round wood rasp roughly shapes the interior contours of wood, leather, soft metals, and soft plastics.