Sanding capacity 508mm(20") wide and 100mm(4") thickness with variable speed feed control and the economy of spiral-wrapped sandpaper roll. This 20inch Drum Sander has full cast-iron construction, which provides maximum working stability and durability. The unique i-Sanding system continuously monitors the load on the drum motor and automatically regulates the speed of the conveyor motor to maintain the highest feed rate without overload. The worktable with built-in fast adjustment level helps preventing the overlap line or ridge when sanding wider stock than the drum. What’s more, it futures 1.5kw powerful drum motor, variable speed feed, wider conveyor worktable, toolless sanding belt changing design, digital readout for sanding thickness, 100mm dust port, and steel sheet stand…All of these make this drum sander is an incredible machine in the workshop.