PB 3332540 42" .035"/180 Mid Grit Cylindrical Main Sweep/Scrub Broom for Power Boss 9082, Monitor 82 Series Double Scrubbers. Our .035" diameter, 180 grit filament is great for general duty, every day scrubbing tasks on unsealed concrete, sealed concrete, older painted and epoxy painted flooring and most tile and stone surfaces. Much softer than the aggressive .070"/46 grit (3331082) brushes. Long lasting DuPont Tynex-A or Hahls Nylon filament impregnated with 180 grit silicon carbide granules. Fits double scrubbers from Power Boss including 9082 and Monitor 82 scrubbers which require one 42" cylinder sweep/scrub brushes. These units also require clip-on power drive style disc scrub brushes; 3 standard and 4 if using a side scrub brush option. Equivalent to Powergrit 120AGS, Clean Grit and Blue Grit. Priced each. 1 cylinder scrub/sweep brush required per unit. Replaces Power Boss 3332540