Hydraulic Dump Pump. 48 GPM flow rate, 2500 psi working pressure. 2.5" gear width. 6.38 cubic inch displacement per revolution. Cast iron construction, high pressure double lip seals, built in relief valve. Air shift kit available at extra charge. Interchanges with Commercial, Parker, Permco and others. Part number MH102-2.5. Made by Metaris, a North American company.