FC 11-421P 11" .030" Poly Scrub Brush for Factory Cat Tomcat Floor Scrubbers. Our most economical brush option. General duty .030" medium polypropylene filament. Polypropylene filaments can be used on most flooring surfaces including concrete, tile, stone, quarry tile, terrazzo, rubber, textrued rubber, textrued epoxy, and almost all other flooring surfaces. These .030" poly brushes should not be used on newer high gloss flooring surfaces. A soft nylon brush should be used. Includes 8 point clutch plate with spring clip. Some older models require a 6 point clutch plate (if a 6 point plate is needed, please reference this in the Special Instructions box at checkout). Please check your existing brush set up before ordering. Fits Factory Cat and Tomcat branded floor scrubbers including Factory Cat model 21 and Tomcat 2100-D. Commonly listed as 10" brushes. Most machines require two brushes. Priced Each. Replaces Factory Cat Tomcat 11-421P. Our Part Number FC 11-421P