FC 11-421N 11" .020" Nylon Scrub Brush for Factory Cat Tomcat Floor Scrubbers. These soft Nylon brushes are designed for light duty cleaning on most sensitive surfaces such as epoxy painted flooring with a high gloss. We can also make these in a very soft .016" white Nylon or a stiffer .030" white Nylon (reference FC 11-421N-16 or FC 11-421N-30 at checkout). Nylon filaments outlast polypropylene filaments. 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 11-421N. Our Part Number FC 11-421N