AD 56505048 18" .050"/80 Grit Abrasive Disc Rotary Scrub Brush for Nilfisk Advance Buffers and Scrubbers. Our second heaviest grit scrub brush for stubborn soils. Great for heavy duty scrubbing or stripping of unsealed concrete flooring or aging sealed flooring surfaces. .050" diameter Tynex-A or Hahls Nylon filament impregnated with 80 grit silicon carbide granules. Equivalent to Dyna Grit, Nylo-Grit, and Mal-Grit (Usually black in color). Filament is set in an 18" diameter solid heavy duty plastic molded block. Includes NP-47 style twist on clutch plate. (***Some models had the NP-92 twist on clutch plate - Listed as Gold NP-92 Drive Cap. If your model has this NP-92 series, search for 56505922 or call 800-277-3780 to specify***). Fits Nilfisk Advance scrubbers and buffers including Galaxie 20, MP-20 HS, Mobilmatic 20, Whirlamatic 200, Pacemaker 20, Pacemaker P20E, Matador 20 Series, Hydro-Retriever 200, 200HD, Convertamatic 20B, 20E, 200B, 200BD, 200LX, 200E, and Nilfisk BA 500. These brushes have a 5" center hole with before mounting the clutch plate. Many machines require one, or in some rare cases, two brushes. Please check your machine before ordering. 19" scrub path. Often listed as 19". Replaces Nilfisk-Advance 56505048, 505048. Our Part Number AD 56505048