grinder 18v 125mm dewalt dcg406nDewalt grinder with electronic brake that stops the disc quickly when the trigger is released. It has an Electronic Clutch that reduces the backlash reaction in the event of a jam or stop. CHARACTERISTICS 18V brushless motor Electronic brake that stops the disc quickly when the trigger is released Electronic clutch that reduces the backlash reaction in the event of a jam or stop Mesh guard restricts dust from being sucked through the motor Rubberized