Original Singer sewing machine presser bar mounted thread cutter, Simanco part #26075. Used on many older Singer models including the 15, 27, 28, 66, 99, 127, 128, 201, 221 & 222K Featherweight. Good vintage condition, rust free. *Please note that these cutters were not very sharp even when new, so you may choose to sharpen it with a fine file or stone prior to use.