FC 15-421N / 29-421N 15" .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 15-421N-16 or FC 15-421-30 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 FC 7-421N-6PT in the Special Instructions box at checkout). Please check your existing brush set up before ordering. 14" diameter brush block with a 15" diameter 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, 290D, GTX 30D, Magnum 30D, 250-15, Tomcat 3000D, XR-45 and other models. Many of these scrubbers are offered in a cylindrical brush model. Please check your machine parts manual before ordering. Replaces Factory Cat Tomcat 15-421N, 29-421N. Our Part Number FC 15-421N