TEKTON 6689 12-Inch Mill File Tapered rectangular profile finishes lathe work, smooths edges, and sharpens saw teeth and blades Medium-coarse, second-cut grade is ideal for deburring, shaping, and sharpening Single-cut teeth remove material at a slower rate for a smoother finish Large, comfortable poly handle gives you a sure grip for controlled strokes and pressure Versatile shop file can be used on metal, plastic, and wood