tower bolt 1)Material:Steel,Iron 2)Outer packing:Bulk in Carton,plywood case tower bolt1)Material:Steel,Iron 2)Surface Finish:plain, zinc plated or color painted 3)Outer packing:Bulk in Carton,plywood case 4)OEM:Acceptable 5)Brand Name: YiLian Metal6)spec:according to the customers' needs