The VRH-1000 Variable Rate Control System works with any John Blue piston or squeeze pump for ground speed oriented & variable rate control from the cab. Also works with many GPS/GIS control systems including Ag Leader, Agco Field Star & John Deere Green Star. Includes Rawson Accu-Rate controller, hydraulic motor drive kit, sprockets/chain, wiring harness & pump base plate (hydraulic hoses not included). Use with John Blue flow divider (without orifice discs) for much wider application range.