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 smallas 46mm for a stan dard 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 as 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 . ■5.PM－246 The hook accommodates thread twice as long as that for a standard hook .lt also reduces the foequency of bobbin thread replacement. thereby enabling the operator to smoothly conduct sewing with a higher degree of efficiency. purpose： Bags, pouches,shoes ,article male of canvas,vinyl ,leather ,etc .