Sizes are in inches: 1/2, 3/4, 5/8, 3/8, 1/4, 1/8 Product Description: This is a three-fold binder (three-fold presser foot) that can be used for industrial and professional single-needle sewing machines. A set of 6 sizes is a great value. The reason for the "as-is" condition is that, although unused, the metal has become dull or has minor scratches due to long-term storage. We have priced it accordingly. Instant purchase is welcome.