R1234yf Adapter Kit, R1234yf to R134a Quick Coupler, High Low Side Connector Conversion Kit, 1234yf Adapter to R134a for Car Air Conditioning System Evacuation Recharging Complete R1234YF Adapter Kit: This set contains 2 pieces, a red high-pressure R1234YF quick coupler and a blue low-pressure R1234YF quick coupler.
