Brushless motor requires no brush changes The Electronic kickback brake engages when a pinch, stall, or bind-up event is sensed, engaging with maximum force to quickly stop the wheel, reduce the movement of the grinder, And shut the motor off POWER-LOSS RESET® - 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 cycled (turned off and then on) to restart tool. Variable speed functionality lets the user change wheel speed for applications as needed DWE46005 bail handle (included) offers multiple positions for user preferred configuration