Item Name: Car Monitor Air Alert Sensor Indicator Tire Gauge Stem Caps Air Pressure Valve. 100% Brand New and High QualitySimply look at the color to know if your tire is low or normal.Install This new pressure cap tight.Inflate tire to correct pressure.Determine the correct tire pressure for your tires.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. Packing content: 4pcs x Tire Pressure Indicator *Please make
