4PCS Car Tire Preure Indicator Caps Tire Air Alert Cap 12V 24V Cars Trucks Suits Auto Tire Preure Monitor Sensors TPMS FeaturesCondition: 100% Brand New and High Quality !Tire Preure Monitor Valve Stem Cap Sensor Indicator 3 Color Eye Alert NewPreure: 2.4 PSIFit on any standard size existing tire valve stemVisually alerts you when the tire preure is low to help avoid premature tire wear or blowouts from under- inflated tiresIndicationGreen shows that tire preure is normal.Yellow shows that the preure is down about 5 pounds.Red alerts you that the preure is down by at least 10 pounds.SpecificationMaterial:PlasticPackage weight:30gPackage size:5cm*5cm*2cmColor:as shownPlease allow 1-3 CM differs due to manual measurement.Package List4 X Tire Preure Monitor Valve Stem