2010 Great Plains 8321DVN 21' Discovator, Manual, Hydraulic Adjust Turbo Blades, Hydraulic Raise/Lower & Fold, Single Point Depth Control, Four Bar Harrow W/Rolling Basket, (3) Hydraulic Connections, 32 X 15.50-16.5SL Mainframe Tires, 12.5L-16.5SL Wing Tires, SN: GP-1786DD