Hromee Automatic Tire Deflators Kit for Jeep, Cars, Trucks, ATV 6-30 PSI Adjustable Air Deflating Set with Gauge

I was about to try the $90 ones and saw these, Read reviews and thought to give it a try. Dang they work great! Watch a youtube video on how to set the first one on first tire. Then use that tire at correct pressure to set the remaining three. Once they are all set just jump out when you want to air down, walk around and put on each tire. in about 4-5 min all are done at at set pressure (I use 13lbs) I absolutely love these, makes air down so fast and easy, No longer sticking my key into valve and squatting down for 20 mins to air down. Just screw these on, tend to other things and take off once air releasing stops

Has no numbers on it, unlike other brands To complicated without numbers

Kit is nice , gauge works fine but to calibrate deflators is a process which is not easy

Work's great , take's a little bit of Time to adjust them but onece it's done they work good ! I set mine to about 17psi and they Always stop between 15 and 17psi ! Of course dont expect to have 100% accuracy on all 4 tires it's not what there made for ! Just screw them on and wait until they stop and then finish them by hand to have the perfecly equal psi on all 4 ! I juste love it it's a big time saving for me !

They work, nothing to really complain. Not as fast as I would want, but since you're not removing any valve stems, they're good enough. Best part is they're quick to connect/disconnect, so the next tire is done by the time you're done your current one.