BUNKER INDUST Adjustable Auto-Stop Tire Deflator Valve Kit (10-30 PSI),4 PCS Tire Air Down Tool Offroad 4x4 Accessories with Storage Pouch, Rotate Detach, Scales Precise, for Car Trucks RVs UTVs

Funcionan a la perfección no tienes que estar sacándole el aire a las llantas una poruna sólo las atornillas y es muy rápido el procedimiento de toma menos tiempo

Originally I grabbed some cheap deflators, the typical unmarked brass ones. These are much better.They are marked with PSI, so you don't have to guess and keep trying until you get it where you want it.The light is a decent little bonus. The case is the real bonus.

Used out on the tail has a nice case and is simple to use. Highly recommend

Easy to use

Their good for letting air out of your tire. Unfortunately it does not let out constant amount of air on each tire. If you aiming for 20 psi. You'll get one tire might be at 15, two tires at 25 and last one 10.

Testing in the driveway these worked great. One valve got stuck closed as the manual suggested but with this design its easy to correct the issue.

First, they do work. The problem is they are not very precise. I've found that they are 4-5PSI off which can be a lot if you are airing down to say 15PSI. I'm usually only going down to 15PSI or so and they are close enough for that and MUCH more convenient than sitting there manually airing down and checking pressure on each tire. That being said, if you are doing some serious rock crawling, you might want to look for something more accurate.

I have two other types but they don’t work as good as these do.These are awesome. Highly recommend.