4pc Car Tire Pressure Monitor Inidcator-30psi indicator
Pressure Range: 30psi, 2.0Bar 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
Color Indication: Greenshows that tire pressure is normal. Yellowshows that the pressure is down about 5 pounds. Redalerts you that the pressure is down by at least 10 pounds.