PASSENGER VALVES-TUBELESS The snap-in type can be quickly mounted to the rim.It is flexble in natures so it may provide complete air-seal even when it is bent for airservice or tire pressure check. Made of special rubber(as EPDM)compound to resist ozone damage and prevent from premature deterioration caused by rim hole compression and cold.Its maximum inflation is 420 kPa(60P.S.I)