18" CRB Brush Set for BrushMaster 45 and Brush Pro 45 machinesThis 18" CRB Brush Set is specifically designed as a replacement for Austrian made Counter Rotating Brush (CRB) machines, including the BrushMaster 45 and Brush Pro 45 models. These brushes are used for professional carpet and hard surface cleaning, providing the necessary agitation for effective dirt and soil removal. These replacement brushes are engineered for compatibility and performance, ensuring your professional cleaning equipment operates