Nicholson Mill Bastard File, Single-cut, Rectangular, 6 In.

Crescent Nicholson 6″ Single-Cut Bastard Mill File is ideal for sharpening mill or circular saws and 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.