No-volt release switch prevents the unit from starting unintentionally when locked on. Switch must be consciously reset before power is delivered. Soft start reduces movement of the tool on start-up increasing user control. High efficiency motor design improves performance in demanding applications. Dust ejection system removes majority of debris from the air which passes over the motor, preventing abrasion and tracking. Small girth allow comfortable gripping resulting in superior ergonomics. The low profile gear case allows access in confined areas. Anti vibration side handle to improve user comfort. Anti lock flange prevents flanges from permanently locking up and locking the disc on. New 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. Abrasion protected motor for increased durability. Side positioned spindle lock gives greater protection to button when using in confined spaces.