FC 22-521SG 22" 18 Single Row .018"/500 Soft Grit Cylinder Scrub Brush for Factory Cat Tomcat 22, 2200, and 24 (MiniMag/GTX/Magnum) Series Scrubbers. Our softest non-abrasive cylindrical scrubbing brush for light duty scrubbing jobs on polished, epoxy painted or other sensitive flooring surfaces. Long lasting, .018" DuPont Tynex-A or Hahls Nylon filament impregnated with our lightest 500 grit silicon carbide granules. Lighter and softer than Light Grit. Fits Factory Cat and Tomcat 22, 2200C, 2200EX, Magnum 24, MiniMag 24, and GTX 24 scrubbers which require two 22" cylindrical scrub brushes (Listed as a 24C Old Style - 24" scrub path with brush overlap). These are the OLD style scrub brushes with the slotted drive system. These are for units with serial numbers BELOW 50000 (newer style is a "star" drive with six notches for models with serial numbers ABOVE 50000 - Search for FC 225-821SG). Please check your unit before ordering. Two brushes required per unit. Priced each. Our Part Number 22-521SG