1、Sleeve can protect against injury and loss of coolant 2、Coupling interface fits with service R134, 1/4inch flare male 3、Quick and easy to connect/disconnect with high flow 4、Reliable and safe for valve access systems even at working pressure 5、Side mounting for A/C gauge set(R-134A) type Description: This set of R134A air conditioning (A/C) quick couplers allow you to connect multiple hoses in the automotive industry / car R134A air conditioning system during diagnosis, charging, or evacuation. High and low connectors are included. Its safe design can effectively prevent injury and loss of coolant. Features: Sleeve can protect against injury and loss of coolant. Coupling interface fits with service R134, 1/4" flare male. 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. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.