... for sofa,furniture, golf bag and other extra heavy thick materials sewing Jingneng Brand XL-441/471 single needle unison feed ... feed with needle,presser foot and feed dog,strong power to feed to assurepretty sewing extra heavy materials.Sewing area can be 420mm,suitable for ... to increase the quality and efficiency of sewing.Suitable for extra heavy materials sewing,such ascase,bags,sofa,furniture, ...