Rugged heavy-duty models. The heavy-duty frame and rugged canopy of the MD72, MD82 and MD92 are cantilevered for smooth crop flow across the cutter bar. These disc mowers have a close-coupled design for maximum ride stability, especially in tight turns and during transport, and are built with heat-treated components to stand up to most extreme field conditions. Cutting widths range from 6 ft. 8 in. to 9 ft. 2 in. (2,040 to 2,800 mm).