Original Singer 301 / 301A sewing machine thread cutter - The 301 thread cutter has a larger diameter to accommodate the thicker presser bar used on the 301, so it is not compatible with other Singer models. Good vintage condition, may have minor darkening due to age but will be clean and rust free. Please note that many of 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. Original, genuine Simanco part #170091