DeWalt Flexvolt 60 Volt MAX Lithium-Ion Brushless 4-1/2 In. - 6 In. Cordless Angle Grinder with Kickback Brake Kit13 Amp Motor 9000 rpm no load speed for applications with 6 In. griding wheels Brake engages when the trigger is released with stopping speeds of 1. 5 seconds Kickback Brake engages when a pinch, stall, or bind up event is sensed Electronic brake engages with maximum force to quickly stop the wheel, reduce the movement of the grinder, & shut the grinder off E CLUTCH activates in less than a tenth of a second when a pinch stall is detected, shutting