Oscillating circuit 5 mm for maximum removal rate with good surface quality. Non-slip paddle switch with dead man's function for safe starting and optional speed control. Vario-Tacho-Constamatic (VTC) full-wave electronics for grinding at material-specific speeds that remain constant under load. Electronic presetting of the desired speed range. Soft start minimizes surface defects when touching down. Unique brushless motor for maximum efficiency during grinding, even in continuous operation. Low vibration for comfortable working in continuous operation. Overload protection protects the motor from overheating. Separate main switch protects against unintentional starting. Motor and disc brake allow the machine to be put down quickly. Suction possibility by connecting an all-purpose vacuum cleaner. Sanding disc with multi-punching for effective extraction and longer abrasive life. Easy to service due to exchangeable cable.