specialty： 1.Consistent seam quality The unison-feed provides the optimal feed efficiency by feeding hesvy -oeight materight materials smoothly and firmly. 2.Excellent for sewing sharp curves The diameter of the cylinder is as small as 46mm for a standard hook or 50mm for a double -capacity hook The small diameter cylinder is quite helpful for handing bags,shoes ,and other small articles smoothly and easily. 3.When using the knee lifter ,the lift of the presser foot is as high sa 15mm 4.The horizontal feed is best suited tor attaching of piping tape (v type) The feed mechanism that can synchronize the binder in the piping -tape attachment process om the sewing of shoes . Purpose： Bags, pouches,shoes ,article male of canvas,vinyl ,leather ,etc . For sewing tubular materials such as bags an shoes has outstanding to sew small curves smoothly.