1: Pass though ISO :9001 2: matel : cooper / steel 3: offer different color 4: Finish: chrome plated, zinc plated or black Truck & Bus ValveTubelesss Nickel Plated O-Ring Seal Clamp-in Valve No.TR545D,TR545E,TR546,TR546-36,TR543D,TR546E,TR547DName TRUCK & BUS VALVESDescript Truck & Bus Tire Valve