Wide Vehicle Compatibility: Two size options fit R134a and for R1234yf automotive cooling circuit systems, perfectly matched with manifold gauge sets for car air conditioner repair. Dual Color Pressure Marking: Red knob for high pressure circuit, knob for low pressure circuit, clear distinction to avoid wrong connection during maintenance work.
This product would be ideal for applications requiring a quick, adjustable valve connection for refrigerant R134a and R1234yf systems.