Iglobalbuy 60'' A/C Refrigerant Charging Hose HVAC 1/4'' SAE 600 PSI Burst Pressure 3000 PSI W/ Shut Off Ball Valve For R134A R12 R22 R502 R404 60'' refrigerant charging hose deigned to meet 1/4" SAE requirement for refrigerant permutation,features a 600 PSI working pressure and 3000 PSI burst pressure, fit most refrigerants like R134A, R22, R12, R502,R404. Easy to operate and install, strong sealing for durability and safety. Necessary tools for HVAC, car air condition maintenance and coolant or Freon adding. Rugged neoprene coating offers flexibility and wear resistance ensuring longer life and dependability. Coupler nuts feature deep knurling for a positive grip that enables quick finger-tightening. Good quality machining on the brass ends and the backflow testing is very great.