This is the correct service valve set used on most 1964-66 Ford, Mercury & Lincoln products equipped with factory a/c using a York or Tecumseh compressor with Roto-Loc head that uses a square-cut Teflon seal. It has flare hose connections. IMPORTANT NOTE - This set comes with 2 valves that are both #8 (for Discharge and Suction hoses) and 2 Roto-Loc Teflon seals. Please double check your current valves and compressor for size (both #8) and type (Flared and Roto-Loc).