Premium Replacement S94 1/8" (3mm) Double Groove Outer Piping Foot designed for Singer 111W and Seiko STW-8B style needle feed walking foot industrial sewing machines. This outer piping foot features a double groove design for 1/8" (3mm) piping, allowing smooth and accurate stitching when sewing piping or welt cord. For proper operation, it is used together with the S93 inner piping foot, making it ideal for upholstery, leather, and heavy fabric sewing applications.