... specificationsItem.NOHHC-099ONameLong Tube Steel BoltMaterialIron, Stainless Steel, Brass, Al, Copper, etcSurface treatmentZinc, Copper Nickel, Chrome, Tin, ... , Aluminum, Phosphor Copper, Brass, etc. (According to customer's demands)2. Surface finish: Zinc, Nickel, Chrome, Tin, ... a high admiration and is widely trusted at home and abroad.5. All goods are strictly monitored and inspected from production ...