Hydraulic PTO Pump, 1,000 RPM RPM, 25 hp Min. HP, Displacement 5.7 cu in/rev, Inlet Port (In.) SAE #16, Outlet Port (In.) SAE #12, GPM @ 2000 PSI 22.1 gpm, Shaft Dia. (In.) 1-3/8, 1-3/8 in dia, 21-Teeth Shaft Type, CCW Rotation, 2,500 psi Max. Pressure (PSI)