AD 56505837 15" .022"/120 Scrub-Grit II Mid Grit Abrasive Disc Rotary Scrub Brush for Nilfisk Advance Scrubbers. Our second to lightest grit scrub brush for light to moderate soils. Great for light to medium scrubbing and deep cleaning of sealed or unsealed concrete flooring or even marble and quarry tile, slate, VCT and terrazzo flooring surfaces. Can also be used for scrubbing tile with grout lines less than 1/2" in width. .022" diameter Tynex-A or Hahls Nylon filament impregnated with 120 grit silicon carbide granules. Equivalent to Mid Grit and Scrub-Grit II (Usually red in color). Filament is set in a 15" diameter solid heavy duty plastic molded block. Includes 3 mounting drive lugs. Fits Nilfisk Advance scrubbers including Condor 4530D (with 45" scrub deck option), Warrior 32D, Warrior AXP, Warrior ST (32" Disc Models), BA 855, Convertamatic 32D, Advenger 3210D, Advenger 3210D-AXP, BR 800S, BR 800S EDS, Adgressor 3220D, Adgressor 3220D-AXP, BR 850S, BR 850S EDS, Mobilmatic 64, Mobilmatic 6400, and Condor XL / SC8000 (Side Scrub Brushes). We also offer these brushes in a .040"/120 Grit. These have a larger bristle diameter for a slightly stiffer brush. Call for details - 800-277-3780. These brushes have a 5-1/2" center hole. Many machines require two, or in some cases, 3 or 4 brushes. Please check your machine before ordering. Often listed as 16". Replaces Nilfisk-Advance 56505837, 505837. Our Part Number AD 56505837