TR525GY HIGH PRESSURE ALUMINIUM TIRE VALVE TR525GY HIGH PRESSURE ALUMINIUM TIRE VALVE specification: MATERIAL: Alumminum, Natural rubber COLOR TYPE: sliver, yellow, purple, red, blue, green... TR525GY HIGH PRESSURE ALUMINIUM TIRE VALVE description: 1)This item is made of zinc alloy stem, core valves and special formula rubber(mixture of EPDM and Nature) in order to resist to ozone damage and prevent temperature deterioration caused by rim hole, heat and cold. 2) On the surface we did oxidation so it can not easy to corrosion. 3) We can make the goods as per client's requirement, including the material, color, shape.. TR525GY HIGH PRESSURE ALUMINIUM TIRE VALVE pictures for your reference: