Crewman AS20B Auto Scrubber is simple and reliable. Simple controls make operation easy. Its easy operation reduces training. Easy maintenance is tool-free. The 20" wide, single disk scrubhead on this battery-powered auto scrubber maximizes scrubbing performance. Pad speed is 140 RPM with the 0.5 hp motor. Weighted 26" wide squeegee removes water to help reduce slip-and-fall injuries. Use on smooth finished floors, ceramic tile concrete floors, vinyl floors, hallways, lobbies, classrooms and patient rooms. Runtime is 2.5 hours. Auto scrubber includes 9-gallon solution tank and 11-gallon recovery tank, pad driver, battery pack and charger.