Vintage Singer sewing machine low shank adjustable hinged narrow zipper / cording foot. This attachment is compatible with the 221 / 222K Featherweight, as well as other low shank machines including the 15, 66, 99, 101, 127, 128, 185, 192, 201, 306, 319, 328, etc. . Nice vintage condition, bright & rust free. Genuine, original Simanco accessory, part #161127