Treat surfaces to a wonderful cleansing with the 6 in. Koblenz and Regina Scrub Brush. The set of two 6 in. replacement scrubbing brushes features tampico and cocoa bristles that provide durability and deep cleaning. The brushes are not for use on wood floors or carpet, and they can be used as a base for other Koblenz polishing pads. The brushes are compatible with all Koblenz Shampooers/Polishers using 6 in. attachments.