This foot allows you to sew as close to the zipper as possible without accidentally nicking the zipper teeth. Also great for sewing cording and piping.

Singer Sewing Machine Models:
Classes: 241-3, 31, 44, 95, 191D, 195K, 196K, 241, 245, 251, 281, 331K, 366K, 400W, 451K, 491, 591D, 600W, 660A, 771, 1300, Centurion 121D