The Lavina 20 and 25 variable-speed surface preparation machines operate on 208-240 V power; the 20 uses single-phase power while the 25 operates on three-phase. Use both machines for wet or dry applications. Each boasts a self-leveling skirt to prevent spray-out while in use. The planetary motion can spin clockwise or counterclockwise. Superabrasive Inc. 800-987-8403.