If you have escalators to keep clean, this is the only machine you should be using The Windsor® Treadway® is especially for this purpose. Simple brush and comb replacement: when the tanks are empty, the brushes and combs can be changed without additional tools. Highly mobile: smooth running casters ensure superior maneuverability, and a foot-operated parking brake keeps the unit securely in place. Clean right up to the edges: two counter-rotating, motor driven roller brushes with centering skid in the middle and outboard deflectors clean the outermost grooves in the treads.