"DESCRIPTION Features Sealing Use in conjunction with non-gauged inflators Brass body with a steel lever Clip on type chuck Specifications Chuck Type: Clip on Chuck Style: Single straight Tail / Thread Type: Female Tail / Thread Size: 1/4"" BSP Female Sealing Air Chucks Sealing type air chucks employ a 'check valve' which seals the chuck, closing the air passage while it is not being used, and when used, it will open the core on the tyre valve allowing the pressure from the hose to be transferred to the tyre. When a 'live' non-gauged airline is used for inflation of the tyre, a sealing air chuck should be used. REVIEWS"