The professional automotive high and low pressure quick couplers adapter for R1234yf refrigerants, AC manifold gauge, diagnostic check, recovery and evacuation work.
The heavy duty low loss refrigerant manual couplers are quick and easy to install, turn them counter-clockwise to the "closed" position，then you can pull up on the couple and attach them，until fully screwed out/expanded，red for high pressure, blue for low pressure easy to operate , include 2 removable brass adapter (1/4" SAE Male Port).
Brass material, pass a strict inspection to ensure high pressure resistance with solid construction and stable performance.Extended disconnect protection sleeve provides safety protection and protect from injury and refrigerant loss, defending against leakage.

Material: Brass and Aluminum Alloy.
High Side R1234yf Coupler (Red): M12mm-Female x 17 mm
Low Side R1234yf Coupler (Blue): M12mm-Female x 14 mm
Adapters: M12mm-Male x 1/4” SAE Male.