This is the 15" tuff-block nylon carpet scrub brush with np-9200 clutch plate. The best quality brush for this application. Nylon is flexible and supple enough to gently scrub carpets, yet has more memory than other fibers for a longer lasting brush. On brushes 14 in diameter and larger, the two outer rows are heavier to scrub the carpet and flex the pile while the softer inner rows massage the dirt from the carpet for a deeper cleaning action.
1 each