The SGR650 Stump Grinder features a new cutting system that provides a more efficient and precise cutting method. In addition, the new cutting system increases the longevity of the each individual tooth. The machine arrives with 4 rows of a total of 8 Tungsten Carbide teeth pre installed. FEATURES: The newly designed teeth and cutting method can manage various soil conditions and contain 2 rotating independent edges. The teeth are made of tungsten carbide and replacing them is a breeze! This powerful machine will allow you to easily grind objects up to 9 inches above grade and 8 inches below grade. This machine is designed for removal of small stumps. SPECS: General Model No: SGR650 Pre-Assembled: Majority Engine brand: Powerful, high-specification Honda GX160 engine Horsepower: 5.5 hp Displacement: 163 cc Net weight: 90 kg Gross weight: 105 kg RPM Operating: 3600 rpm Type of Fuel: Gasoline Start: Recoil Oil Sensor: Yes Wheel Tire 140/70-6 Brake: Drum brake Belt: 2 pcs double V-belt Blades: 8 pcs blades, Tungsten Carbide 4 x Right, 4 x Centre) Frame Construction: Welded Steel Transportation: Two lift handles on each side allow two people to lift the unit into a truck or SUV Ergonomic handle: Adjusts to any height position to ensure operator comfort. Product size: 63 x 27 x 47 inch Packing size: 42 x 32 x 26 inch Packing method: Plywood Cutting Wheel Cutting wheel diameter: 8.66 inch Cutting wheel thickness: 4.72 inch Bearing: UCP205 Cutting Wheel RPM: 2200 rpm/min Drive: Direct Belt Drive + Centrifugal Clutch Cutting Capacity Above grade: 9 Inch Below grade: 8 Inch Stump diameter: 20 cm Teeth, Carbide Tips Cutter type: Wood Steel type: 42CrMo Steel hardness: HRC40-42 Weight: 1.59 lbs Length: 4-1/4 Inch Width: 2-13/16 Inch Tip Length: 1-1/2 Inch