This unit is the BIG brother of our 01648 combination sander, featuring a heavy cast iron construction for durability when sanding wood or metal! It has a heavy guage stamped steel cabinet and 2 4" dust ports for ease of dust removal and has a whopping 12" disc capacity! The belt drive 1 1/2 hp 110/220 volt motor will quickly power its way through the toughest jobs and come back for more. Graphite platen under the belt helps the belt run cool, extending belt life. A whale of a machine at a whale of a price!