50552-LR1234yf female coupler to R134a male coupler w/ STD valve core low sideAuto Air Conditioning ToolsAdapter & Caps & Depressor & Pilot & Insert & Ball ValveAdapter/Service PortManifold-Gauge-Vacuum-Pump-Quick-Coupler-Pressure-Gauge-Refrigerant-Recovery-UnitR1234yfR134aADD TO INQUIRYREMOVEDETAILR1234yf female coupler to R134a male coupler w/ STD valve core low sideMaterial: Brass