Vintage Singer sewing machine low shank bias binder / binding foot. This attachment is compatible with all low shank machines including the 15, 27, 28, 66, 99, 127, 128, 185, 192, 201, 221 / 222K Featherweight, 306, 319, 328, etc. Very nice vintage condition, clean & rust free. Genuine, original Simanco accessory, part #121464.