ANCLLO 4Pcs Car Tire Pressure Monitor Valve Stem Caps Sensor Indicator 3 Color Eye Alert

Material of Car tire pressure indicator caps,Visually alerts you when the tire pressure is low. Car tire pressure monItor valve caps help to avoid premature tire wear or blowouts from under-inflated tires,increases fuel efficiency, safety and control, extends tire life. Green/yellow/Red system indicate level of proper tire inflation. 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. Suitable for 32-36psi (2.2-2.4bar), suitable for automobile, motorcycle, bicycle, etc. Make sure you don't lose the black washer. It is recommended that you remove the car before repairing it in the garage.