4PCS Car Tire Pressure Monitor Valve Caps Auto Tire Pressure Gauge Sensor Indicator Features： 1、Condition: and High Quality ! 2、Visually alerts you when the tire pressure is low to help avoid premature tire wear or blowouts from under-inflated tires 3、Fit on any standard size existing tire valve stem 4、Pressure: 2.4PSI 5、Tire Pressure Monitor Valve Stem Cap Sensor Indicator 3 Color Eye Alert New 6、Tire Pressure Monitor Valve Stem Cap Sensor Indicator 3 Color Eye Alert New Pressure: 2.4PSI. 7、Fit on any standard size existing tire valve stem. 8、Visually alerts you when the tire pressure is low to help avoid premature tire wear or blowouts from under-inflated tires . 9、It have 6 mounths warranty. Specification： Features: Condition: and High Quality ! Tire Pressure Monitor Valve Stem Cap Sensor Indicator 3 Color Eye Alert New Pressure: 2.4PSI   Fit on any standard size existing tire valve stem  Visually alerts you when the tire pressure is low to help avoid premature tire wear or blowouts from under-inflated tires  Indication:   Green shows that tire pressure is normal.  Yellow shows that the pressure is down about 5 pounds.   Red alerts you that the pressure is down by at least 10 pounds.   Specification:  Material:Plastic Package weight:28g Package size:5cm*5cm*2cm Color:as shown Please allow 1-3 CM differs due to manual measurement. Package List:  4 X Tire Pressure Monitor Valve Stem Package List： 4 X Tire Pressure Monitor Valve Stem