Minimal Vibration - Triple-planetary action quickly responds to user movements to minimize vibration for increased comfort. Commercial Design - Durable construction with all-metal base, handles, tubes and trigger assembly designed for the rigors of commercial cleaning. Safety Switch - Protects users with a safety shut-off switch. Finish Restoration - Quickly swap out 17" pads or brushes for scrubbing, stripping and polishing. Pad driver sold separately.