4pcs /Set Vehicle Tire Valve Caps High Precision Tire Pressure Monitoring Warning Cap, Model: Plastic Core

1. Material: plastic + alloy2. Transparent window design, real-time display of tire pressure3. Fine thread to ensure no air leakage with the valve4. Stainless steel exterior plating, not easy to wear and rust5. Compact size, exquisite appearance6. Size: 24 x 8mm7. Weight: 5.5g/pcInstructions for use:1. Normal: in the standard tire pressure, the transparent window should be green, the vehicle normal driving2. Warning: tire pressure is slightly lower than the standard about 10 percent, the transparent window is yellowish green, should be inflated in time3. Dangerous: tire pressure is lower than about 25 percent of the standard, the transparent window should be yellow, should be immediately checked, inflated