AUTOKAY 10PCS Stem HVAC AC Schrader System Vacuum

10 New Service / Access Valves 1/4 SAE x 1/4 O.D. x 2.75" stem | The core is a poppet valve assisted by a spring that is threaded into the steam | Each valve has a core and a cap with valve core remover | The caps are made of brass, they are provided with core remover and have an inside rubber o-ring | The stem is a self-contained valve which opens to admit gas to a chamber