Advanced type, oval shaped whole cassette, highly integrated with stylish streamlineEnveloped with aluminum whole cassette, protection for arms and fabricSturdy aluminum frame constructionDual spring structure providing strong arm Strengthened joint, smoothly retracted and extendedSuperior material for componentsEnvironmental friendly powder coatingDurabilityFlexibility with small, medium and big size For commercial and residential use Motor controlled mainlyPacking: 1pc/box producing area:China