Brushless AC Motor improves performance and efficiency in demanding applications. Tool free guard allows for quick and easy guard adjustment. Electronic Brake stops the wheel quickly when the trigger is released. Adjustable variable speed dial allows the user to pre-set speeds for more control. Electronic soft start to limit start-up current and kick back reaction. No volt release switch prevents the unit starting when plugged in, even if the switch is lock on. Switch must consciously reset before power is delivered. Anti vibration side handle provides the user with greater comfort during operation. Electro-mechanical clutch reduces the "kickback" transmitted to the operator if the cutting disc jams