1. Material: carbon steel, E-coating+ poder coated 2. Diameter: 40*3.0mm, welded ... , Sandbalst with paint, etc;4. Material: Carbon Steel, S235, 195, Or 345; Stainless Steel, SUS304, Or SUS316; Aluminum is available;5. OEM ... only provide the high levle quality, but also good service. Low-profile Coated Bike Rack