Dixon® Aeroquip® Hydraulic Coupling, Interchange, Series: 7800, 1-1/2-11-1/2 Nominal, FNPT, 2500 psi, Brass, Domestic Dixon® Aeroquip® 12WF12-B 7800 Interchange Hydraulic Coupling, 1-1/2-11-1/2 Nominal, FNPT, Brass, Domestic