FC 5-421P 19" .030" Poly Scrub Brush for Factory Cat Tomcat 38, 40, 40HD, 3700 Disc Brush Model Scrubbers, 6 Point Drive Plate. General duty and economical .030" diameter blue or black polypropylene. Equivalent to Poly (.028). Polypropylene brushes are great for light duty scrubbing of all hard surfaces and some delicate surfaces. For a longer wearing brush, use our .030" diameter Nylon (FC 5-421N30). 18" diameter plastic block (19" scrub path) with a 6-point clutch plate (Please check your model for the proper number of points. We offer a 6 point and 8 point clutch plate. Use FC 19-421P for 8pt.). We can also make these in a softer .020" Poly. Fits Factory Cat Model 38, 40, 40HD and Tomcat 3700 disc brush model floor scrubbers. Some of these models may take cylinder brushes instead of disc brushes. Please check your model before ordering. Two brushes are required per unit. Priced Each. Replaces Factory Cat Tomcat 5-421P. Our Part Number FC 5-421P