This Alphasew Walking Foot is specifically designed to fit and conform to Singer models 15-90, 15-91, 201, 221, and 222. Close inspection will show that the teeth on the foot are an exact match to those found on the feed dog. Our product offers a superior solution compared to other walking feet available; it includes a guide bar that can be used in either direction, allowing you to sew difficult-to-feed fabrics with no slipping, sticking, or mismatching. This foot is perfect for providing even seams for a flawless topstitch job on your Singer model. Compatible with Singer models 15-86, 15-87, 15-88, 15-89, 15-90, 15-91, 15-125, 201, 221, 222.