OREGON 70501 1/4 by 8-Inch Round Saw File, 12-Pack Swiss double-cut file design with precision cutting-tooth and fewer teeth per inch than competitive files Precision centerless grind Uniform file diameter and tooth height Tang length is uniform, no burrs nor sharp edges State-of-the-art manufacturing processes; uniform, optimum hardening, high-quality finishing, including sandblasting and demagnetizing