High-powered, D/C rectified motor ensures reliable, brown-out-free, high-speed operation. Precision-balanced all-metal chassis helps users maintain even pad pressure, enabling more consistent results. Interlocked, non-conductive safety switch minimizes the potential for injuries. Low-profile apron with full-coverage bumpers simplifies maneuverability while protecting walls and baseboards. Flexible pad holder automatically conforms to floor irregularities. Fully adjustable handle may be set to accommodate nearly anyone. Nonmarking, retractable 6-inch wheels.