Autobalancer reduces vibration resulting in greater comfort. The electronic variable speed control offers added tool control and enables the tool to be used at optimum conditions to suit the accessory and material. Electro-mechanical clutch reduces the "kickback" transmitted to the operator if the cutting disc jams. No volt release switch will prevent the unit starting when plugged in, even if the switch is in the on position. Switch must be consciously reset before power is delivered. Overload protection will prevent the unit over heating by shutting the unit off until the unit has cooled down. Dust ejection system removes majority of debris from the air which passes over the motor, preventing abrasion and tracking. Anti vibration side handle to improve user comfort. Guard design allows guard fitment, adjustment or removal without the use of tools, for increased flexibility. Fully leaded stator windings for increased motor durability. Pop off brushes protect the armature from damage at the end of brush life resulting in greater motor durability. Small girth allows comfortable gripping resulting in superior ergonomics. The low profile gearcase allows access in confined areas. Abrasion protected motor for increased motor durability. Anti lock flange prevents flanges from permanently locking up and locking the disc on. One piece brush arm prevents brush hang up in extreme conditions. Side positioned spindle lock gives greater protection to button when using in confined spaces.