Respectively, BD 40/66 and BR 40/66 are heavy-duty, ride-on scrubbers with disk-shaped and cylindrical designs. In addition to 62 gal solution tanks, features for both models include 66 gal recovery tanks, 40 in. cleaning widths, and 51 in. wide squeegees. This feature set enables said machines to clean floors at rates up to 75,347 ft²/hr. Also included, automatic mode starts all necessary components when turned on but gradually starts motors to increase user safety.