FC 5-421X 19" .018"/500 Soft Grit Scrub Brush for Factory Cat Tomcat 38, 40, 40HD, 3700 Disc Brush Model Scrubbers, 6 Point Drive Plate. An HMP Supply special item. Our customers have asked for a softer, longer lasting, general duty light grit scrub brush than the .022" Light Grit offered by Factory Cat. These softer, smaller diameter .018" DuPont Tynex-A Nylon scrub brushes are great for light duty scrubbing of all hard surfaces and some delicate surfaces. These light grit brushes are commonly used on epoxy painted flooring with grit, marble, stone, quarry tile and similar slightly sensitive surfaces. Equivalent to Dyna-Scrub, Mal-Grit Lite. Commonly grey or light green in color. Replaces red or light green floor pads. 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 19-421X for 8pt.). We also offer a slightly more aggressive brush for heavier dirt and debris (use FC 5-421PS, Light Grit Equivalent). 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. Not offered by Factory Cat or Tomcat. Our Part Number FC 5-421X