Quality & Durability have allowed the FM Polisher to be called the "Best in the Industry." 1 HP motor with 1.25 service factor means extra power available for grinding, sanding, spin bonneting, and other applications. Die cast aluminum housing is five times stronger than sand castings. Ergonimic, Dihedra/handle for operator comfort. Dual, independent micro switches reduces down time. Handle locking device insures safe operation. Large, non-marking wheels. Machined steel, helical-cut planetary gears provide smooth transmission of power to the floor. Oversized bearings and seals give the gear unit decades of trouble free performance. 360 degrees non-marking, vinyl bumper protects walls and furniture.