ALL-TOP Adjustable Auto-Stop Tire Deflator Valve Kit (10-30 PSI) 4 PCS Screw-on Tyre Air Down Tool for Offroad 4x4 (with 5 Valve caps)

These are a great product! I have another set that looks identical to the Stauns, and these All-Top deflators work much better. These are consistent, but that depends on user care in consistently setting the desired pressure. These start very smoothly and shut off nicely. The lesser performing deflators had a simple flat-head valve seat, but the All-Tops use a chamfered valve seat, and I believe that is why they perform so smoothly and consistently.For my test, I set the deflation to a bit less than 20psi on the front tires and a bit less than 30psi for the rears. The fronts (both) automatically deflated to 18.5psi, and both rears went to 28.5psi. The reason for being less than the marked 20 and 30psi was that I set them just below the lines instead of exactly on the lines. The differences were trivial in terms of driving performance. One thing to be aware of is that after use, the adjustment should be backed out as much as possible without disassembling the units in order to relieve the spring compression and extend the product life.

These little tricks are the best of the best, hands down.We go to the beach often and need to air down, my husband sets the pressure he wants and with in a couple of minutes the tires are at the prefect setting. No bending, no stopping, and zero checking if your tire pressure is right.If you spend anytime off road, do NOT hesitate to buy these. You cam thank me later.

Works exactly as they say they do. Adjust, screw then in, leave them alone…few mins later all four tires are aired down perfectly. Auto shut off is awesome.

Test each one as they're off a TINY bit. Worth the double check

Awesome product. Great way to quickly air down your tires so you have more time on the trails. I set all mine to 20psi and double checked with my tire gauge. All were within 1-2 psi. So simple. Wish I had this years ago.

Why did you pick this product vs others?:Clear instructions, good price, seem well made and delivered on time, what more could you ask for

Upon the very first use of this product it worked perfect for 3 of my 4 tires, on the 4th tire when removing the tool the core got stuck open. After tightening the tool back on and off, hoping this would rest the core, it did not. After brief panic, I was able to use a pen in my pocket to push the core in manually and reset it...but the tool created a scare that I was unprepared for, which could have ended poorly if I not known how to reset a tire's valve core.Setup was easy, but after 1st use I do not have confidence that it will work without issue.I will continue to use with caution.

Highly recommend for deflation, set the proper pressure and attach the valve stem. Very accurate, set all 4 to deflate to 30 psi and stopped releasing air when it reached 30 psi.