Use steps
1.Unscrew the cap of the tire valve
2.The copper head of the tire pressure gauge is inserted into the valve mouth and tightened.
3.The tire pressure meter will show the tire pressure
4.If the tire pressure is insuffcient,please inflate.If the tire presssure is too high,please press the vent valve.The general car is suitable for the tire pressure 28psi-30psi.
5.After the measurement,the copper head is unscrewed and the pointer of the vent valve is pressure back to zero,and the cap of the tire valve mouth is screwed back.
Packaging information Unit white box : 12.5x4.3x21cm, 30pcs/CTN,, CTN Size:44x39.5x24.5cm
