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

Works perfectly

I mean it works as described , 10/10

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.

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.

Easy to use, but look carefully at how to set the PSI: read the instructions!. I'm way too old and impatient to drop each tire with a key and a gauge; so old school! I like to drop my 235/85-16's from 32 (hwy) to 15 (dirt) so I start at one corner and make my way around the vehicle. By the time I'm back to the starting tire, these little deflators have finished. One walk around to install, another to take off. I've given a set to a buddy and he thanks me all the time. These make airing down so easy, just don't leave them on your valves! And the added metal caps come in handy when the originals get lost in the sand.