Schred Max 56 SD is a primary reduction shredder that makes quick work of stumps and land-clearing debris. The hopper opening measures 5×6 feet, with a volume of 4 cubic yards. The unit is available in mobile, stationary, and electric-driven configurations. It has a high torque slow speed bi-rotational hydraulic drive with auto-reverse and anti-jamming programmed into the operation. It is powered by a 50-hp Cat diesel engine.