Durable Material: The TPMS valve stem is made of rubber construction with stable characteristics and high reliability, which is durable in use and has a long service life. Size: Tyre pressure monitoring sensor valve stem length is 5.6cm with a 1.2cm thread, the diameter of the cap is 1cm, the accurate size makes it capable to fit well with your tires and won’t lose easily. Easy to Use: It’s easy to install the tire sensor TPMS valve stem, no modification is needed, it can directly replace your old one, you can install it by yourself or ask for a professional way. Increase Security: The sensor valve stem is an upgraded valve equipped with an overpressure exhaust valve; It can automatically open or close the vent hole of the valve to ensure your car tire is under the right pressure. With this tire pressure sensor, your driving will be safer. Practical Accessories: The tpms tire pressure sensor valve stem kit includes valve stem core (already installed), valve stem cap & mounting screw that attaches valve stem to sensor. Each pack has 4pcs, which is the ideal accessory for automotive tire pressure detection.