High quality tire tube valve cap ITEM:TR413 Material : Natural or EPDM rubber Rim Hole : ... .5(453" dia) Eff.Length:38mm Best selling tire tube valve cap TR413 is made of brass stem, core valves and ... and Nature)1.TR413 is made of brass stem, core valve and special formula rubber. (mixture of EPDM and Natur)in ... ,heat,cold.Maximum inflation is 420k Pa(60P.S.I) High quality tire tube valve cap