EASY INSTALLATION: The compact switch ball valve can be operated with one hand - Screws onto charging hose end. Ball valve design with a quarter turn of 3 color (Red/Yellow/) coded valve handle switch for controls refrigerant. With 45 degree angle on the service port site for easier access. ANGLED BALL VALVE: The R134A shut valves are compact 1/4inch female flare by 1/4inch Male flare on a 45-degree angle. This coupler nuts are deeply knurled for quick finger-tightening. WIDE APPLICATION: Standard ball valve for refrigerants R134A, R22 and R12 charging hoses and manifold. Great tools for car air conditioner, mini split units, condenser, home air Conditioning HVAC charging and recovery. MANUFACTURE STANDARD: The compact ball valve made by high quality Brass Alloy. Meets SAE, EPA and UL requirements for containment of refrigerant. 800 psi (55 bar) maximum working pressure and 4000 psi (276 bar) minimum burst pressure., Weight: 0.5291094288 pounds, Manufacturer: Tuidzljd