Pearl & Sequin Foot - Brother SA150 - Baby Lock ESG-PP Clear, snap-on foot for sewing down strings of pearls, piping, beads or sequins. This foot makes inserting invisible zippers very easy. The grooves on the bottom of the foot hold the zipper coils in place to avoid any slipping while sewing. This provides an invisible closure on skirts, dresses and all garments and can be used on other projects as well.