Specifications: Name: Tyre Pressure Monitor Valve Stem Caps Material: Plastic and Alloy Size: Length 24mm, Diameter 8mm Color: Silver Quantity: 8 PCS Feature: These tyre pressure caps screws are a simple way to check tyre pressure, very light and easy to carry and replace. With the 3 color eye alert tire sensor indicator system, you can quickly see if the tyre pressure needs to be modified. Tyre pressure indicator caps can help to avoid premature tire wear or blowouts from under-inflated tires, extend tire life. A great replacement for your missing valve caps, and make sure you won't lose the black gasket when removing the valve cover. Package Includes: 8 PCS Tyre Pressure Monitor Valve Stem Caps Material: Tyre pressure valve caps are made of chrome-plated metal and plastic, dust proof, not easy to corrode or rust, durable and practical. Visually alerts you when the tire pressure is low. Package: You will get 8pcs tyre monitoring indicator cap, each cap is 8mm/ in diameter and 24mm in length, fits most types of tires. With them, you can quickly determine whether the tire pressure is normal. Easy to use: The color indicates the different tire inflation level. Green indicates normal tire pressure; Yellow means the pressure is 10% lower than the standard; Red reminds you that the pressure is 25% below the standard. Function: Tyre pressure caps screws with a clear window, can clearly display abnormal tire pressure in time, can also can prevent air leaking perfectly, protecting car from exposure to dirt and dust. Application: These tire pressure monitoring caps are suitable for the applicable normal tire pressure of 32~36PSI (2.2~2.5Bar). Suitable for cars, motorcycles, bicycles, etc.