FC 327-821PS 32" 16 Single Row .022"/120 Light Grit Cylinder Sweep/Scrub Brush for Factory Cat XR 34-C Riding Floor Scrubbers. Soft .022" diameter DuPont Tynex-A or Hahls Nylon impregnated with 120 grit silicon carbide granules. For scrubbing epoxy painted flooring, tile, stone, polished concrete and sealed concrete flooring with light soils and debris. We can also make these brushes in a super soft .018"/500 grit (search for 327-821SG, Soft Grit or call 800-277-3780 for details). Equivalent to Light Grit. Usually red or grey in color. Fits Factory Cat XR 34-C cylindrical scrub brush riding scrubbers. Some units require two disc brushes instead of cylinder brushes (use 17-421PS, 17" .022"/120 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. Replaces Factory Cat 327-821PS