Pressure display range: 200 (psi) Display unit: BAR Backlight: Yes Product material: aluminum alloy Product size: 35.5*15.5 Resolution: 0.1 Range: 220psi Name: Tire Pressure Gun Weight: 0.35 Accuracy: 0.01 Measuring range: 0-18Bar/0- 255Psi Dial diameter: Approximately 7cm Trachea length: about 36cm Hand plate length: Approximately 16.5cm Inflatable D length: about 2.7cm Aerated handle: Approximately 5.5cm Thickened trachea: plastic sleeve protection, beautiful and durable Rubber sheath: safety protection, anti-shock and anti-drop Digital display dial: high-quality movement, precise measurement Copper head gas nozzle: strong durability, fastness and durability Comfortable handle: surface spray technology, comfortable hand feeling Return to zero valve: return to zero and deflate, simple and convenient Inflatable port: metal inflatable port Refueling handle: electroplating process, refueling control Instructions 1. Unscrew the tire valve 2. Clamp the pressure measuring head of the tire pressure gauge on the valve mouth 3. The barometer will display the tire pressure 4. If the tire pressure is insufficient, please add air. Please connect the air source to add air. If the tire pressure is too high, please bleed the valve and adjust it to the proper tire pressure. 5. After the test is completed, remove the tire pressure gauge and screw back the valve cap