4 x Silver Car Tyre Valve Cap, Schrader Valve Cap, Tire Pressure Monitor Valve Cover, Dust Cover for Tyre Valve

Tire pressure monitoring valve caps emit a visual signal in case of underinflation. This helps prevent premature tire wear and bursting due to insufficient pressure, improves fuel efficiency, safety and road holding, and extends tire life. Tire pressure control valve caps make it easy to check your tire pressure. Thanks to a simple colour system, you can quickly see if the pressure needs to be adjusted. Green for normal pressure; Yellow for pressure 10% less than standard pressure; Red for pressure 25% less than standard pressure. Installation and operation is simple and fast, requiring no special tools or skills. Simply inflate the tires to the recommended pressure and replace the existing valve cap with this pressure control valve cap. Made of 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 between 32~36 PSI (2.2~2.5 Bar). Not suitable for Presta valves. Note: This product only provides a general visual indication and does not replace a precision pressure gauge.