Self-Propelled Stump Grinder, Hydrostatic Unit (Cutterwheel is Driven by a Heavy-Duty Hydraulic Motor and is Engaged Via a Hydraulic Pump), 49hp Kohler Engine, 4 Wheel Drive (4) Hydraulic Motors for Drive System (2 with Brakes and 2 Without), (6) 8.5 x 10, 4-Ply Tires Mounted on 5-Bolt White Rims (Dual Rims Can Be Removed Via a Single Bolt), Variable Swing, Travel Speed, Unit to be Controlled Via Remote with Tether Back-Up, 21in Diameter x 1 1/4in Thick New Revolution Cutter Wheel With (24) Carbide Teeth, Super Sweep (Regulates Swing when Engine Drops Below a Pre-Set RPM), 35in Wide Hydraulically Operated Grading Blade, 8.5 Gallon Steel Fuel and Hydraulic Tank, Painted Bandit Yellow.