1.Item:Heavy-duty Ball Bearing Hinges 2.Material:Steel 3.Size:Variety ... Plated 5.HS:830021000 1. Product details(1) Item name: Heavy-duty Ball Bearing Hinges with Zinc Plated (2) Material: Steel ... , Powder-Coating, Zinc-Plated, Chrome coated ,Nickel Plated ,Copper Plated, Rust-inhibiting oils, Electrophoresis, Paints and primers, etc. 4. Our leading ...