920281-1 Jb Industries Acme Union, 1/2" Acme Male x 1/4" SAE Female, Brass Fitting Material | Imperial Supplies
Amazon.com: R1234YF Vacuum Pump Adapter, Refrigerant Tank to R12 Fitting Adapter, 1/2'' Female to 1/4'' SAE Male Flare Adapter, Fits for R1234yf to R12 Refrigerant System : Automotive
AD48 CPS 1/2" ACME Male x 1/4" Female Flare Adapter (3 Pack)
Professional HVAC Tool:Pair:1/2 male ACME X 1/4 SAE FFL Connector, w/SS Ball check Valve;Brass Swivel,2 in a pack Brassfor R134a manifold gauge HVAC service
R134a to R12 Fitting Adapter,1/2" Female Acme x 1/4" Male Flare HM S13038 1 PCS | eBay
AD68 CPS 3/8" Male Flare X 1/2" Female ACME Adapter (3 Pack)