Adjustable Auto-Stop Air-Down Deflator Tire Inflator Set, 10-30 PSI, 4PCS

This set allows you to deflate tire air in a short period and you will not have to wait and monitor tire pressure. The vent valve will automatically stop at the pre-set PSI value. Accuracy: Each tire deflation device is individually calibrated, however +/- 2 PSI is acceptable. The air deflation tool set is designed for quick air setup on off-road, but not for precise vehicle adjustment. Adjustable: No tools needed. The tire deflator device comes with a clear display gauge, adjustable air pressure, and stops releasing air when reaching the PSI value, simply by turning the device cover (where the logo is). An adjustable range from 30 PSI to 10 PSI. Packaging: This set comes with 4 air vent valves and a zipper bag.