FC 25-421P 12" Poly Disc Scrub Brush for Factory Cat / Tomcat (6pt. Plate). General duty .030" crimped blue polypropylene. An economical alternative to the soft Nylon brushes, the poly scrub brushes are great for general duty scrubbing tasks on almost all flooring surfaces. The small .030" diameter poly reaches into cracks and grout lines. These can be used on sealed and unsealed concrete, polished concrete, older painted and epoxy painted flooring, tile and most stone surfaces. Includes older style 6 point clutch plate commonly used on non-converted models with serial numbers BELOW 50000. Some newer models require a 8 point clutch plate (if an 8 point plate is needed, please reference this in the Special Instructions box at checkout). Fits Factory Cat and Tomcat branded floor scrubbers including Factory Cat GTX and Magnum Series models with serial numbers BELOW 5000. Please check your clutch plate set-up before ordering. Priced Each. Replaces Factory Cat 25-421P. Our Part Number FC 25421P