Review on ATsafe Professional Deflator Pressure Special by Michael Baird

This is a complex tool that doesn't come with any guides or recommendations (even on the web). It will easily pull the pin out of your tire and completely deflate it. I ended up having to call AAA after using it once and my AAA mechanic didn't even know how to use it. DO NOT BUY if you don't want to spend time and money with your AAA friend.