Robinair (13188 Conversion Hose - High Side, 72", Red 72 inch long, 1/4 inch red hose, for use with Robinair 40134A and 40135 manifolds, 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 1/2 inch ACME x 1/4 inch female flare fittings with a valve core depressor and 45 degree bend on one end for convenient access to the system Coupler nut features 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