4pcs Useful Universal Monitor Car Air Alert Air Pressure Valve Tire Gauge Stem Caps Sensor Indicator

Label:Yes Determine the correct tire pressure for your tires. Simply look at the color to know if your tire is low or normal. Install This new pressure cap tight. Inflate tire to correct pressure. 100% Brand New and High Quality

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