FC 13-421C 12" .035" Mid-Grit 180 Grit Disc Scrub Brush for Factory Cat 25, Tomcat 2500, MiniMag 26D, Magnum 26D and GTX 250-26D Disc Brush Scrubbers. As the name describes, the .035"/180 grit scrub brushes can be used for everyday general duty scrubbing on hard surfaces including tile floor. The narrower bristle reaches grout lines. These are commonly used on older sealed or unsealed concrete flooring with light to moderate debris. Includes 8-Point clutch plate with spring clip (6pt. plate pictrued above). Please check your model for a 6 or 8 point plate. If 6 pt. plate is needed, please refer 6pt. in the special instructions box at checkout. Usually blue in color. Equivalent to Midi-Grit. 12" diameter block with a 13" scrub path. Commonly listed as a 13" brush. Most machines require two brushes, priced each. These are commonly bundled to reduce shipping costs. If a more aggressive brush is needed, use FC 13-421S, Tough-Grit equivalent. Some of these models require either disc or cylinder scrub brushes. Please check your model before ordering. Replaces Factory Cat Tomcat 13-421C. Our Part Number FC 13-421C