Feature:1. Main Function: Exhaust the excess air inside the refrigerant meter tube by pressing to achieve a better vacuum and fluoride effect.2. Wide Application: HAVC adapter is designed tee joint, it fits your truck perfectly, can connect r22, r12, r134 refrigerant, vacuum gauge, etc.3. Quick Coupler Size: One end is internally threaded 1/4in SAE flared FFL with builtin valve core depressor. The other ends are 1/4in SAE male thread flare MFL.4. Premium Material: The 3 port valve core is made of highquality brass, with durable structure, wearresistant and rustproof, and can be used for a long time.5. Easy Installation: Quick access Tee connector, easy to operate and install, strong sealing, not easy to leak, durable and safe.Specification:Item Type: 1/4in Valves Core Tee AdapterMaterial: BrassApplicable Models: 1/4sae interface; such as r22 r12 r134.Package List:1 x 3 Port Connector1 x Valves Core Wrench1 x Air Release Valve