Hy-Capacity designed Cessna style pump w/ open back (plate provided) to accept piggyback pump.Includes: 70935 NEW Hitch Pump, HH543976 Pilot Relief Valve, 382244 Pump Mounting Gasket, and Mounting O-RingsThe 70935N KIT Main Hitch Hydraulic Pump Kit, w/ Pump, Gasket & Relief Valve, 17 GPM fits equipment brands such as: International