Very simply put, a Staun Internal BeadLock™ divides the innards of a tubeless tire into two air chambers. The one nearest the beads holds rubber to metal. This means the remainder of the tire's air space can confidently be inflated or deflated to any pressure you desire baring blowing it, up of course.
Staun Tire Deflators are the easiest, most accurate way of decreasing your vehicle's tire pressure. They are the most superior high quality, fully guaranteed deflators available on the market.