Vintage Singer sewing machine low shank adjustable tucker foot with the blackside finish, it comes complete with the original box and instructions. This attachment is compatible with low shank machines including the 15, 66, 99, 127, 128, 185, 192, 201, 221 / 222K Featherweight, 306, 319, 328, etc. Very nice vintage condition with minor signs of use, clean and rust free. Genuine, original Simanco part #36583.