QitinDasen 4Pcs Premium Car Tire Tyre Pressure Monitor Valve Stem Caps, Warning Safety 3 Colors Sensor Indicator, Dust Cover Air Caps

Tire pressure monitoring valve caps provide a visual warning when tire pressure is too low. This helps prevent premature tire wear or blowouts caused by insufficient tire pressure, improves fuel efficiency, safety and handling, and extends tire life. Tire pressure monitoring valve caps are a simple way to check tyre pressure. With a simple traffic signal color system, you can quickly see if the tyre pressure needs to be modified. According the recognize color to display the pressure of the tire: Green shows that tire pressure is normal; Yellow shows that the pressure is 10% lower than standard; Red alerts you that the pressure is 25% lower than standard. Installation and use are simple and quick, requiring no additional tools or expertise. Simply inflate the tires to the correct pressure and replace the existing valve cap with this tire pressure monitoring valve cap. Made of high-quality metal and PC plastic, it is durable, rust-resistant and sturdy. Suitable for cars, motorcycles, bicycles and other vehicles with standard Schrader valves and tire pressure of 32～36 PSI (2.2～2.5 Bar). Not suitable for Presta valves. Note: This product provides only a general visual indication and is not a replacement for an accurate tire pressure gauge.