Zipper foot with guide # 14D is suitable for the precise, professional insertion of zippers. It resembles standard Zipper foot # 4, but features an added bar across the top of the foot which serves as a guide.Owing to its wavy shape, this adjustable guide rides right over the coils of the zipper. The result is a neat, evenly inserted zipper. And with its ability to produce perfectly parallel lines of straight topstitching, Zipper foot with guide # 14D is is also a useful aid when edgestitching.