1. The sleeve can protect against injury and refrigerant loss. 2. The coupling interface fits R134 service ports, 1/4 \" flare male. 3. Quick and easy to connect/disconnect with high flow. 4. Reliable and safe for accessing valve systems even at working pressure. 5. Side mounting for A/C manifold gauge set type (R-134A). Specification: Description: This R134A air conditioning (A/C) quick coupler set allows you to connect multiple hoses in the automotive/car R134A air conditioning system during diagnostics, charging, or evacuation. Top and bottom connections are included. Its safe design can effectively prevent injury and refrigerant loss. Features: The sleeve can protect against injury and refrigerant loss. The coupling interface fits R134 service ports, 1/4 \" flare male. Quick and easy to connect/disconnect with high flow rates. Reliable and safe for valve access systems, even at operating pressure. Side mounting for A/C manifold gauge set type (R-134A). Specification: Condition: 100% brand new Connection: 90° Material: Metal Compatibility: R134 Quick coupler bottom: blue Quick coupler top: red Application: car adds fluorine Manifold hose connections on both adapters: 1/4 \" Size (L * W * H): Approx. 50 x 30 x 65 mm / 1.97 * 1.18 * 2.56 inches Inner diameter (blue): Approx. 14 mm / 0.55 inches Inner diameter (red): Approx. 16 mm / 0.63 inches Package weight: Approx. 178g ~ 187g Package included: 1 x Quick coupler (with extraction valve core) Note: Manual measurement, please allow 1-2 cm error, thank you. https://m.media-amazon.com/images/I/61uVKUTLeYL.jpg