Adjustable Zipper/Piping Foot 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. SA161 Part number Don’t be fooled only purchase Genuine Brother!