Unparalleled Performance in a 28 inch scrubber. In a single pass, our exclusive Random Orbital Scrubbing Technology scrubs floors deeper and more uniformly, leaving your floors with a perfectly scrubbed surface with no swirl marks. The REV scrubbing technology includes distinct orbital and rotational motions: high speed 1/4" micro scrubbing and 14" rotational low speed macro scrubbing. Effective at deep scrubbing; you can remove floor finish in a single pass, with no chemicals. Floors are left ready for restoration without the use of harsh chemicals, slippery floors, and additional labor costs. EcoFlex™ System: Effortlessly switch between water-only cleaning or different cleaning intensities. Reduce chemical usage, and environmental impact. Drive system: traction drive; Voltage: 24V. Scrub motor: (2) .74 hp; Vac motor: 0.66 hp , 3-stage.