With high torque, ideal for grinding internal surfaces removing paint etc, using flap wheel discs. SJS ? Super Joint System.USER BENEFITS:Ergonomically designed slim body for grinding in tight spots.Internal labyrinth construction seals motor and bearings from contamination.Ideal for grinding internal surfaces, removing paint etc, using with flap wheel discs.Double Insulation, Variable Speed, Electronic Speed Control, Soft Start and Super Joint System (Tool does not come wheel point or flapper wheel)