Adjustable Low-shank Zipper/Cording Foot 55510. This is the best sewing foot for inserting zippers, snap tape, and more. The toe of the foot is narrow for more visibility and precision. Adjust the needle to either the right or left to sew both sides of your zipper easily. You can also use it to attach piping or decorative cording. Singer low-shank adjustable zipper/cording foot. Will fit most low-shank machines.