Changing air pressure

The ARB deflator is super fast and precise. You can deflate too any pressure as it has an integral gauge. The Staun and similar work well is you are only ever going to deflate to a specific pressure. For me, the ARB works better. As I can deflate to daily driving pressure when the camper is off and still deflate to off-road pressure if needed quickly with the same tool. I used to use the chuck with the hose attached but this is orders of magnitude faster as it removes the center of the valve but keeps it captive so you don't lose it.