FC 25-421PS 12" .022"/120 Light Grit Disc Scrub Brush for Factory Cat / Tomcat (6pt. Plate). One of our lighest grit scrub brushes available. Soft .022" diameter DuPont Tynex-A or Hahls Nylon impregnated with 120 grit silicon carbide granules. For scrubbing epoxy painted flooring, tile, stone, polished concrete and sealed concrete flooring with light soils and debris. We can also make these brushes in a super soft .018"/500 grit (search for 25-421SG, Soft Grit or call 800-277-3780 for details). Equivalent to Light Grit. 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 25-421PS. Our Part Number FC 25421PS