4Pcs Car Tire Pressure Monitor Valve Stem Caps Sensor Indicator 3 Color Eye Alert, Car Tire Anti-Theft Valve Stem Cap Cover for Car/Bicycle/Motorcycle Wheels (Silver) - INCART, TPC03-SR

• Model: 36PSI(2.4 Bar), Material: Stainless steel,Copper core, 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. enhances road handling, increases economy, extends tire life,Increases fuel efficiency, safety and control Green/yellow/red system indicate level of proper tire inflation. Red and Yellow indication bar - tire pressure at below 2.0 Bar(Less than 75% of the standard),DANGER.Yellow and Green indication bar - tire pressure at 2.3 - 2.0 Bar(Less than 90% of the standard), WARNING. Green indication bar - tire pressure at Normal range(2.4 Bar),SAFE Applicable to car,motorcycle,bicycle and so on.WARNING: When removing a cap. make sure that you do not lose the black washer. They are inclined to fall out and are very difficult to find again. It is advisable to remove them before your car is serviced at a garage. Package : 4 x Tire Pressure Indicator Valve Stem Caps,4 x Screw nut, 1 x Wrench. Notes:When you make automatic car wash,remove these air caps would be better.