Features: Dust ejection system removes the majority of debris from the air which passes over the motor; preventing abrasion and tracking, Ergonomic main handle with rubber grip allows for maximum comfort when grinding for long periods of time, Abrasion protected motor for increased durability, New guard design allows guard fitment; adjustment or removal without the use of tools; for increased flexibility, Anti-vibration side handle to improve user comfort, Pop off brushes protect the armature from damage at the end of brush life resulting in greater motor durability, The low profile gear case allows access in confined areas, 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, Fully leaded stator windings for increased motor durability, One-piece gear case ensures perfect gear alignment which results in longer gear life.