Features: 1Premium MateriaL: The three way valve core adapter is made of high quality brass the construction is durable and reliable can be used for a long time. 2Professional Structure: One end is internally threaded 1/4in SAE flared FFL with built in valve core and the other two ends are 1/4in SAE male flared MFL. 3Wide Application: The quick coupler access tee adapter can be connected to r22 r12 r134 and vacuum gauge with stable performance and high efficiency. 4Good Sealing Performance: The 1/4in valve core tee connector is designed for double sealing to ensure no leakage brass filling valve comes with sealing cap. 5With Check Valve: The quick access tee connector is equipped with a one way check valve which can greatly prevent media backflow and leakage reliable in use. Specification: Item Type: 1/4in Valve Core Tee AdapterMaterial: BrassApplication: R22 R12 R134 vacuum gauge Package List: 1 x 1/4in Valve Core Tee Adapter1 x One Way Check Valve