1. Zinc alloy hand plate gun body, solid and durable 2. Suitable for all kinds of small and medium-sized vans, cars, motorcycles, etc. 3. It has the functions of deflating, inflating, and testing the tires of the vehicle. It can also be connected to an air pump, and has the function of blowing dust to the vehicle engine, etc. 4. Measurement data, intuitive, fast, unit conversion PSI, BAR 5. Measuring range 0-220psi; 0-16bar Product name: Automotive high-precision tire pressure gauge Product size: 24.2*7.5*3cm Applicable models: Universal Product air nozzle joint specifications: Japanese/American/European joint Instructions: 1. Unscrew the cap of the tire valve. 2. Press and hold the clip of the air tube of the tire pressure gauge, straighten the valve inserted into the tire valve, straighten the card connected by the clip, and then release the clip. (Note: It is recommended to hold it with one hand to avoid air leakage.) 3. The tire pressure gauge will display the tire pressure. The red font on the inner circle is kilograms square centimeters, and the black font on the outer circle is pounds square inches. 4. If the tire pressure is not enough, please add air. If the tire pressure is too high, press the deflation valve to fine-tune the pressure. 5. After the measurement is completed, hold down the clip, press the air release valve to return the pointer of the air pressure gauge to zero, and screw the tire valve cover.