Powerful 12 AMP motor design for increased output power in a more compact tool Super Joint System (SJS) helps prevent gear damage 5 stage variable speed control dial for matching the RPM to the work Electronic limiter stops the motor and prevents accidental motor overload and burnout Details Max. Disc Diameter : 180mm Hole Diameter of disc : 16mm No-Load speed : 8000 r/min Power input : 1800W Weight : 6 kg