Maxim Hydraulic Power Unit (12V DC, Double Acting): 1.3 GPM Flow, 1 Gallon(4 QT) Poly Tank @2500 PSI #6 SAE Port Size and Solenoid Operated with HPU Dimensions: 16.7" L x 7" W x 8" H

Unit works, documentation is limited, hydraulic and electrical schematics are included. If you are buying your first power unit, you may want to do a bit of study before you buy. I use this unit in a non-standard way to power a down pressure cylinder on an auger for an old tractor for planting trees and setting fence poles. So far it works ok, but has little finesse for up and down movement. Overall it will do what I need, would be great for dump beds. A call to Bailey got me the needed info on flow specifications. I may acquire another for another application in the future.