Features Coupling interface fits with service R134, 1/4inch flare male Sleeve can protect against injury and loss of coolant Quick and easy to connect/disconnect with high flow Reliable and safe for valve access systems even at working pressure Side mounting for A/C gauge set(R-134A) type Specification: Connector: 90° Material: Brass Compatibility: R134 Low Side Quick Coupler: Blue High Side Quick Coupler: Red Application: Car Add Fluorine Manifold Hose Connections on Both Adapters: 1/4" Inner Diameter(Blue): Approx. 14mm / 0.55inch Inner Diameter(Red): Approx. 17mm / 0.67inch Package Weight: Approx. 366g Package Included: 1 x Blue Low Side Quick Coupler(With Cap) 1 x Red High Side Quick Coupler(With Cap) Note: Please allow small error due to manual measurement. Thanks for your understanding. Package List