General description High & Low Quick Couplers Adapters for A/C manifold gauge set designed for easy connection and disconnection. The kit includes a blue low side quick connector/adapter and a red high side quick connector/adapter, both equipped with a protection sleeve to enhance safety and prevent refrigerant loss. Technical specifications Model: R1234yf Height: 58 mm (2.28 inches) Diameter: 28 mm (1.10 inches) Material: Metal Package Contents 1 x High pressure quick coupler (red) 1 x Low pressure quick coupler (blue) Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.