Tube valves Material: Brass, Rubber: Butyl rubber or natrual rubber Use: ... made of only the highest quality materials 2.The tire valves can be quikly mounted to the rim.It is ... and prevent temperaturedeterioration caused by rim hole ,heat,cold.Maximum inflation is420k Pa(60P.S.I) 4.we winned ISO/TS16949 ... to : amy (at ) cneverwin.com Tubeless metal clamp-in Valves, tire valves V-4, V-5, valve stems