Diagtree Valve stem caps Car Tire Valve Cup 36 PSI 2 4 Bar Air Alert Motorcycle Car Tire Pressure Monitoring Stem Valve Cap Sensor Indicator 3 Color Eye Alert 4 Pcs

AIR ALERT TIRE VALVE CAP INSATRUCTIONS: 1.Remove vehicle's black valve cap 2.Screw the pressure indicator tightly onto the valve stem. 3.Green indication bar - tire pressure at Normal range.If not,please check the tire pressure for your safety. DESCRIPTION: * Model: 36PSI(2.4 Bar), Material: Stainless steel  * Visually alerts you when the tire pressure is low. 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 * To help avoid premature tire wear or blowouts from under-inflated tires * Enhances road handling, increases economy, extends tire life,Increases fuel efficiency, safety and control  * For use on 32 pound per square inch recommended pressure  * Easy to install: Remove vehicle's black valve cap,inflate tire to correct pressure,Screw the pressure indicator tightly onto the valve stem,check if the color is green,DONE. Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item.  Package:4 x Air Alert Tire Valve Cap