Ergonomic, dihedral handle for operator comfort. Dual, independent micro switches reduce down time. Handle locking device insures safe operation. 1 hp motor with 1.25 service factor for extra power. Die cast aluminum housing is five times stronger than sand castings. 360 degree non-marking, vinyl bumper protects walls and furniture. 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. Chrome handle tube resists rust. Brass and steel strain relief protects the power cable. Large, non-marking wheels. Hospital grade plugs with soldered wires and hardened ground plug reduces cost and increases safety. Power supply: 115V 1hp; Brush speed: 175 rpm. Gear system: Dual planetary.