Review on 🚙 Real 4X4 4 Tire Air Deflators: Premium Automatic Brass Valve Kit for Offroad Vehicles, Cars, ATVs, Jeep Wranglers, and Four Wheelers by Phil Oliveira

I had nothing to compare it to but I heard from another SUV friend that this type of product existed so I searched and settled on it. They're easy to use once you understand how they work. You are pretty accurate. After calibrating one of these to my desired tire pressure I just used it and switched to all 4 tires making them all the same. You can also calibrate all 4 and then use them all at the same time. OR. If you want a set of them to be calibrated at different pressures you can find a way to label each one and then select the tire pressure you want and then move that 1 cap to each tire. However. don't try to confuse anyone. They really work as advertised and come in a cute little pouch to keep them together. It came with a pressure gauge, but I didn't use it.