1 Big hook 2 Cylinder unison feed sewing machine 3 GC1-341 Product DescriptionBig hook cylinder unison feed sewing machineGC1-341 ModelGC1 ... such as textiles, leather, polyethylene, synthesis, etc.Suitable for sewing bags, sails, tents, bag, coats, leather products, etc ... sleeves, rigid good abrasion resistance and resistance.*Automatic calm needle, needle, and a number of tangent, reverse stitching . ...