Low loss anti-blow back SealRight fitting immediately traps refrigerant in the hose when disconnected, helping meet non-venting regulations and prevent finger burns. 45 deg end for easy installation in tight areas. Gaskets resist deterioration from existing CFC, HCFC, HFC and HFO refrigerants and oils. Available with SealRight fittings on both ends. UL recognized assemblies (File SA9737). Made in the USA.