Treat floors to a wonderful cleansing with the 6 in. Koblenz and Regina Shampoo Brush. The set of two 6 in. replacement carpet brushes for Koblenz shampooers uses polyethylene bristles that are gentle on carpet fibers. The brush is compatible with all Koblenz Shampooers/Polishers and with Kenmore and Regina Shampooers/Polishers that use 6 in. attachments.