The mechanical drive WM-120P-MH11 mixes up to 12 cubic feet (340 liters) of material in an EasyClean poly drum. The WM-120P-MH11 comes with an endless list of standard features including a heavy-duty safety grate with built-in bag cutter, durable paddle shaft of 1 ¾-inch square hardened steel, sturdy steel removable tow tongue, and high-strength cast iron paddle arms with wiper blades for a clean, uniform mix.