Yellow Jacket 1/4" PLUS II Low Loss Anti-Blow Back 45 deg Fitting. 45 degree 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). Low loss anti-blow back SealRight fitting immediately traps refrigerant in the hose when disconnected, helping meet non-venting regulations and prevent finger burns.