FC 327-821SG 32" 16 Single Row .018"/500 Soft Grit Cylinder Sweep/Scrub Brush for Factory Cat XR 34-C Riding Floor Scrubbers. Not offered by Factory Cat. 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. These can be used on newer sealed or painted floors. Great for textrued epoxy painted flooring. Usually grey or light green in color. Fits Factory Cat XR 34-C cylindrical scrub brush riding scrubbers. Some units require two disc brushes instead of cylinder brushes (use 17-421SG, 17" .018"/500 Grit Disc Brush - 16" Block Diameter). Please check your unit before ordering. Two cylindrical brushes create a 34" wide scrubbing path. Two brushes required. Priced each. 327-821SG