Color:TR416 4(Pack) and Repair Tool ✪Rubber tire valve stem: The type of the valve stem is TR-412; This valve stem is approx. 1.4 inch long; Fits for most rime holes of 11.5 mm/ 0.453 inch in diameter. ✪Good quality tyre valve stem: Ozone tested and leak tested, these tire valve stems are manufactured from EPDM rubber and equipped with high temperature brass valve cores. ✪Enough for spare or replacement: 8 Pack black tire valve stems are enough for your spare or replacement; A good accessories for car owners or professional mechanic. ✪Keep the tyre inflated: Rubber valve stem come with a cap; The cap of this rubber valve stem can give your wheel a stylish new look and help in keeping the tyre inflated. ✪Easy and convenient to install: These rubber tyre valve stem with bolt-in design, easy and convenient to install and hold the pressure good; Durable and practical. Valve life Since the valve is an inevitable aging problem of the rubber material, the valve body will gradually crack, deform and lose its elasticity. When the vehicle is running, the rubber valve will also oscillate back and forth with the centrifugal force, which will further promote the aging of the rubber. In general, the life of a rubber valve is 3-4 years, which is similar to the service life of a tire. Therefore, it is recommended to replace the rubber valve together when replacing the tire.In order to avoid the aging of rubber valves, metal valves have emerged on the market, and steel valves are one of them. Due to changes in the material, the price of the steel valve is much higher than that of the rubber valve. The service life of the steel valve is two to three times that of the rubber valve, which is mainly due to the fact that the metal material is not easily oxidized. Metal valves also have better air tightness.
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