| Coil Hose® Air Chuck generates an air-tight seal around your tires valvestem. It screws directly onto any Air hose with a 1/4 in male NPT air inlet and you must use teflon tape to seal the connection. Air Chucks allow you to connect to your tires valvestem and Inflate to the desired pressure Our Air Chucks fit all Standard Automotive-style Stem Valves Schrader Valves |