Car Auto Ac High / Low Adapters Conversion Kit with Manual Couplers

set2: 1* High pressure quick coupler (red) + 1* Low pressure quick coupler (blue) & 1* 19 mm blue cap + 1* 22 mm red cap + 1* low side quick connector + 1* high side quick connector + 2* Transparent connector coverThese Low/High side retrofits/adapters/fittings will convert your old 3/8 inch; or 7/16 inch; R12charging port and make it accept the R134a quick disconnect hose.colour: blue+redMaterial: Metal plastic/metalHigh & Low Quick Couplers Adapters for A/C manifold gauge setBlue: Low side quick connector/adapter,Red: High side quick connector/adapterquick and easy connect/disconnectProtection sleeve to provide safety protection to avoid injury and refrigerant loss, defending against leakagesize: High: 3/8 inchLow: 7/16 inchModel: R1234yfSize: height 68 mm / 2.6 inch,diameter 30 mm / 1 inchPackage Contents:1* High pressure quick coupler (red)1* Low pressure quick coupler (blue)1* 19 mm blue cap1* 22 mm red cap1* low side quick connector1* high side quick connector2* Transparent connector coverOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.