... following:1, Material:Stainless steel hinge, copper hinge, aluminum hinge, iron hinge2, Surface treatment:plating colored zinc, copper ... Products specification:2" , 3" , 4" , 5" , 6" , 8" , 10" , 12"4, Package specification:20 piece /plastic bag, 200pcs/carton ... hinge and bolt, small hinge, AA column, aluminum ladder column, stainless steel ladder column, stainless steel bracket. Carrying large stocks ...