The Robinair 32096 is a 1/4" standard hose with standard fittings. It is neoprene-coated for flexibility and wear resistance, with a valve core depressor and a 45 degree bend on one end for convenient access to the system. 500 PSI working pressure, and 2500 PSI burst pressure. Robinair premium refrigerant charging hoses are built for long life and dependability. A strong, six-sided crimp provides a reliable connection between the hose and barb, even at maximum pressure. The coupler nuts are deeply knurled for quick finger-tightening..