Coilhose air chucks are engineered and manufactured for heavy-duty use and a long service life. Our air chucks are all made from solid brass. A chuck's valve check serves two purposes: It seals the chuck, closing the air passage while it is not being used and when used, it will open the core on the tire valve, allowing the pressure from the hose to be transferred to the tire. When a live air line is used for non-gauged inflation of the tire, a closed air chuck should be used.
$5.49