Stubby style stationary air pump used for non-corrosive liquids and oils including gear lube and ATF. For use on tanks or drums with 2in. opening. Flow (GPM): 5, Operating PSI: 100, Max. PSI: 145, Air Inlet Size (in. NPT): 1/4, Inlet Port (in.): 3/4, Outlet Port (in.): 3/4, Gear Ratio: 3:1