[Product Name]: Automotive Tire Pressure Gauge [Product Material]: Stainless Steel Tube+Plastic Head [ Product Usage ]: Mini tire pressure pen for automobiles [Suitable vehicle model]: Universal type Pressure display range: 0-50 (psi) [Product Features]: No need for batteries, ready to use, compact and convenient Usage Method: 1. Unscrew the valve cover 2. Confirm that the tire valve on the scale has been reset to zero 3. Align the tire valve and press it tightly for 2 seconds to measure the pressure. Package List: 5X Tire Pressure Gauge