General Description: Two brushes are required for operation of this machine. Both small, inner brush and large, outer brush have black, more aggressive bristles than the standard brushes originally included with the System.
 
When to Use: Ideal for use on carpeted stairways, or wherever indoor-outdoor carpeting is used (boats, for example).

Why to Use: The standard bristled brushes are gently effective for upholstery fabrics. When doing carpeted stairs and such, a more aggressive agitation is needed.

Packaging:
                 Stock #        Description
                 U1780A         Optional Black Small Stiff Brush
                 U1785B         Optional Black Large Stiff Brush
                 U1750A         Standard Small White Brush
                 U1775B         Standard Large White Brush