The BC-25 brush chipper is engineered with a gravity-feed system that includes a 23- by 20-inch feed opening, 6-inch capacity and two single-edge cutter blades. The Kohler Command Pro CH25 V-Twin engine with heavy-duty centrifugal clutch powers the 1,000-pound BC-25. For ongoing production, the BC-25 is designed with a patent-pending mulching block to prevent jams and patent-pending replaceable cutter block, which allows operators to maintain close tolerance to the cutter blade. www.toro.com/en-us/pages/default.aspx