Robinair (38172A 1/4" Standard Hose with Quick Seal Fittings - 72", Yellow 72 inch long, 1/4 inch yellow hose features a 500 PSI working pressure and 2500 PSI burst pressure - ideal for standard refrigerants Rugged neoprene coating offers flexibility and wear resistance ensuring long life and dependability Quick Seal fittings with a valve core depressor and 45 bend on one end for convenient access to the system Coupler nuts feature deep knurling for a positive grip that enables quick finger-tightening Hose ends feature a strong six-sided crimp that provides a secure, reliable connection between the hose and barb - even at maximum pressure