These machines are equipped with walking foot, needle feed and feed dog,all of which act completely in unison. Consequently, the upper or lower sewing material does not slip and also these machines can sew accurately and easily several sheets of heavy weight materials piled up together. Equipped with a safety clutch mechanism which protects the rotating hook & needle from damage when the thread is caught in the rotating hook. The diameter of cylinder-bed is 6.5mm, is ideally suited for stitching tubular and curved articles, such as shoes, bags, small articles, purses, etc. Suitable for stitching (taping or piping or binding) for he, materials. Binder feeding together with unison feed.