This Heavy-duty BRUSH BEAST brush walk behind mower powered by a20 HP Briggs and Stratton v-twin engine combined with dual hydro-static drives transforms tall grasses and thickets into a 4 in. finish cut appearance in a single pass. Dual breakaway blades act like battering axes to cut up to 4 in. Diameter x 20 ft. trees. Landscapers, large lot owners, hunting clubs, grounds keepers and parks departments will appreciate the electric start, effortless dual hydro control and fast forward speed. Clear up to an acre in less than 30-minutes.