Model DCG413BDewalt 4.5 in. Angle Grinder with Brake (Tool Only)IncludesDETAILS & SPECIFICATIONSFeaturesBrushless motor requires no brush changes.Kickback Brake engages when a pinch, stall, or bind-up event is sensed and the electronic brake engages with maximum force to quickly stop the wheel, reduce the movement of the grinder and shut the grinder off.E-Switch Protection-The ON/OFF trigger switch has a no-volt release function. In the event of a power outage or other unexpected shut down, the trigger switch will need to be cycledTwo stage trigger requires two actions to activate tool.SpecificationsSeries20V MAXBatteries Included0Voltage20VCordlessYesSwitch TypePaddleWheel Diameter4-1/2 in.Battery TypeLi-IonRPM9000