... sofa,furniture, golf bag and other extra heavy thick materials sewing Jingneng Brand XL-441/471 single needle unison feed cylinger ... and feed dog,strong power to feed to assurepretty sewing extra heavy materials.Sewing area can be 420mm,suitable for large products ... ,bags,sofa,furniture,golfbag,belt and sport articles.SPECIFICATION:Max.Sewing Speed:800s.p.m.Max.Stitch Length:11mmLift of Presser ...