This machine is constructed with link thread take up lever, rotating hook with thread, Sewing needle bar and bouble lockstitch, it has characteristics of asthetic appearance, operation complete lubrication, easy maintenance and low noice, This machine is widely used in embroldering or medium and heavy materials and various materials, eg. Knitwear, cotton textiles and chemical fabric, Including curve and lockstitch (only replacing feed dog presser foot and needle FT-271 brede sewing machine.