This inner tube valves quality in line with European standards, and 100% leak ... we product various of tire valves,tyre valves,auto tire valves,and inner tube valves.The following are our main valves: TR412,TR413,TR414,TR415 ... TR573,TR574,TR575TR570C TR543.TR544,TR545,TR546 TR618A,TR218A TR13.TR15,,,,,,,ETRTO NO: V2.03.8RIM HOLES :Φ11.5(.453 ... ,best serviceWe are always here for you! inner tube valves