Dust ejection system removes the majority of debris from the air which passes over the motor; preventing abrasion and tracking, high-efficiency motor design improves performance in demanding applications, Small girth allows comfortable gripping resulting in superior ergonomics, The low profile gear case allows access in confined areas, Anti-vibration side handle to improve user comfort, 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, Anti-lock flange prevents flanges from permanently locking up and locking the disc on, Recessed spindle lock design allows max depth of cut and greater protection to button when using in confined spaces.