Nicholson 6" Round Bastard Cut File with Red Handle can be used for shaping and smoothing metal, wood, and plastic. It is made of high-quality steel and features a comfortable red handle. The file has a single-cut texture on the sides and edges for applying a smooth finish. The rectangular shape lets you smooth and sharpen straight surfaces. It is also great for draw filing and finishing metals. All sizes taper slightly in width to improve access in slots.