duMONT Minute Man® Square Broaches are designed to generate, in one-pass, a Square hole in a previously cast or drilled round hole. Standard Square Broaches begin in an oversized pilot hole and generate the square hole while leaving small radii on the flats. This design is acceptable in over 90% of Square Hole applications and reduces stock removal allowing for a shorter more efficient Broach. Full Square Broaches are available leaving no radii in the flats of the broached piece. These Internal Hole Broaches are ideal for drive jigs, fixtures, and all other applications requiring a finished square through hole. Available in both American Standard, and Metric sizes as well as coated.