EBay The Nicholson single-cut bastard mill files sharpen mill or circular saws and are ideal for draw filing and finishing metals. The rectangular shape lets you smooth and sharpen straight surfaces. 2 Square edges allow you to make grooves fixed at the same width as the file, and all sizes taper slightly in width to improve access in slots._X000d_ _x005f_x000d_ Bastard cut, American pattern mill file _x005f_x000d_ Sharpens mill or circular saws _x005f_x000d_ Great for draw filing and finishing metals _x005f_x000d_ Rectangular shape lets you smooth and sharpen straight surfaces _x005f_x000d_ Single-cut texture on the sides and edges for applying a smooth finish _x005f_x000d_ 2 square edges allow you to make grooves fixed at the same width as the file _x005f_x000d_ All sizes taper slightly in width to improve access in slots _x005f_x000d_ Product Description Nicholson Mill Bastard File, Single-Cut, Rectangular, 12 In. - 21842NN Nicholson 12" Single-Cut Rectangular Mill Bastard File is a professional-grade tool designed for sharpening mill or circular saws and for draw filing and finishing metals. Its rectangular shape allows for smoothing and sharpening of straight surfaces, while the two square edges enable the creation of grooves with a fixed width. The file tapers slightly in width, improving access in slots. Made of high carbon steel with a width of 2.5", This file delivers durability and efficiency. Nicholson 12 In. Single-Cut Rectangular Mill Bastard File. Professional-grade tool is used for sharpening mill or circular saws and for draw filing and finishing metals. Rectangular shape lets you smooth and sharpen straight surfaces. Two square edges allow you to make grooves fixed at the same width as the file. All sizes taper slightly in width to improve access in slots.