FC 15-421PS / 29-421PS 15" .022"/120 Light Grit Scrub Brush for Factory Cat Pilot 28, Models 29, 29SS, 290, GTX 30D, Magnum 30D, 250-15, Tomcat 3000, XR45 Disc Brush Scrubbers which require 15" disc scrub brushes. As the name describes, the .022"/120 grit scrub brushes can be used for everyday light to general duty scrubbing on hard surfaces including tile floors, rubber flooring, quarry tile, sealed concrete, epoxy painted flooring, painted concrete or polished concrete flooring. The narrower bristle reaches grout lines. These are commonly used on older sealed or unsealed concrete flooring with light debris. Usually grey or red in color. Equivalent to Light-Grit. Lighter than Mid-Grit (We can also make these in a .018"/500 grit - call 800-277-3780 for details). Replaces floor pads. Includes 8-Point clutch plate with spring clip (older model 29's took a 6pt. plate, FC 7-421PS. If these are require please reference FC 7-421PS-6PT in the Special Instructions box at checkout). Please check your existing brush set-up before ordering. 14" diameter block with a 15" scrub path. Commonly listed as a 15" Brush . Most machines require two or three brushes, priced each. These are commonly bundled to reduce shipping costs. Fits Factory Cat Pilot 28, Models 29, 29SS, 290, Magnum 30, GTX 30, 250-15, Tomcat 3000, XR45 and other models. Many of these scrubbers are offered in a cylindrical brush model. Please check your machine parts manual before ordering. Priced Each. Replaces Factory Cat Tomcat 15-421PS, 29-421PS. Our Part Number FC 15-421PS