Singer Vertical Needle Zipper Foot Is A 1-Piece Tool That Is Able To Adjust On The Left Or Right Side Of The Sewing Machine Needle Hinged-Adjustable Zipper Foot Attachment Offers Precision Stitching For Zipper Application To Garments And Fabrics Helps The User Sew The Zipper Without Applying Pressure To The Zipper Teeth Suitable For Singer Vertical Needle Sewing Machines And Also Suitable For Other Brands That Use A Side-Fastening Thumbscrew