Adjustable Auto-Stop Tire Air Down Kit (10-30 PSI) Screw-on Tyre Deflator Tool for Offroad 4x4 Vehicle Accessories

These made airing down to 15psi effortless. I threaded one on each of the 4 valve stems in the parking lot and let them work while I set up my bumper flags and other equipment, They stopped right at 15-16psi, happy with the accuracy. Took them off and back into the provided carry case and hit the dunes.

They did work great and they got to the desire tire pressure in no time, easy installation also!

I've been trying to decide on a good air down solution and decided to try these because I was also ordering a Samout compressor. What I like about these over the type that removes the valve stem core is that I can just screw them all on and not bend down the whole time I'm trying to air down. They seem to be stout and they are very easy to use. The only reason I said I like them "mostly" is because two of them easily adjusted to 21psi and turned off perfectly. One of them took quite a few tries and effort to get it to 21 and I finally just accepted 22psi. And the last one took me some time to realize that it was "closing" at about 21psi but it didn't close right so it was still slowly letting it air. It was coming out fast enough that I thought it was just still working but it was going on for awhile so I checked and the tire was at 15psi. After adjusting and testing it a few times I realized I was hearing it "pop closed" and the air flow was reducing, just not stopping. I checked the pressure when I heard that sound and it was about 23psi. I adjusted it again and got it close to 21psi when I hear the pop close sound, I just have to be sure I'm paying attention. Overall they are a really fast way to air down with minimal bending or kneeling required. And if you care, the Samout compressor is fantastic so far.

Very handy and quick!

Just recently got back form a Jeep Run, was the first time using these. When I saw them, I read some of the reviews and purchased them. When I received them, they are constructed from metal and appear to be very sturdy. They came with a zippered carry case with four air nozzle caps made of metal. The instructions were easy to understand. The PSI label was easy to see and read but not all numbers are present. When I set the pressure, air was released as I was screwing on the tire nozzle. Took about 5 minutes to reach set pressure. When I went back to remove the gauge, I checked the tire pressure and all four were within two pounds of each other. The pressure was set to 15 PSI.

La calidad del material es muy bueno, Hace su función de desinflar automáticamente pero no es preciso ni consistente. Coloque el marcador a 20PSI y paró en 10PSI Para lograr los 20PSI coloque el marcador en 30PSI Pero no todos son precisos, hay que ir probando uno por uno para ver el rango de error que tienen. Ya cuando lo tienes todos listos funciona bien.

Very accurate and convenient when airing down. Definitely recommend

Seems like an accurate way to deflate.