Genuine Brother Accessory. This foot attaches zippers and pipings easily. Its position can be adjusted exactly on the edge of the zipper/piping, avoiding the non-flat parts of them. It also presses the fabric with just the right pressure. Adjustable zipper foot for left or right seams. Adjustable guide to accommodate varying piping dimensions. Single stitch opening for accurate and perfect straight stitch creation.Requires Low Shank Adapter for ULT Series, PC-6500, PC-8200 and PC-8500 sewing machines.