Estone 1pc New R134A Adapters Refrigerant Tank/Vacuum Pump 1/4" Flare Female x 1/2"ACME Male Material: Aluminum Length: 3cm Color: Gold 1/4" Flare Female x 1/2"ACME Male Connects R12/R22 hoses to R134a Tanks or vacuum pumps with the 1/2" ACME R134a threads