Two diagonal grooves act as a guide, making zip insertion a breeze compared to the standard method. Located in the sole of the foot, the grooves easily accommodate the zipper coils, which are fed through at the same time as the zipper tape is guided under the foot and sewn.
Literally perfect. Stitches very close and not a single stitch went over the zipper part. Also, these guys ship orders fast which makes me love their business and keep me shopping with them! Thank you!