Female O-Ring Hose Fitting Refrigerant Type 134A R12 R22 R502 MP39 MP66 and R404A Female Thread 7/8-18 In Dash Size 10 Min Burst Pressure 2000 PSI Max Working Pressure 500 PSI Hose Outside Dia 0.78 In Hose Inside Dia 0.5 In Material Steel For Use With Female O-Ring and Low Side Port Standards SAE J2064