AD 56505838 15" .035"/180 Scrub-Grit III Abrasive Disc Rotary Scrub Brush for Nilfisk Advance Scrubbers. Our third heaviest, and most popular grit scrub brush for moderate soils. Great for medium to heavy duty scrubbing of sealed or unsealed concrete flooring or even aging sealed flooring surfaces. Can also be used for scrubbing tile with grout lines less than 1/2" in width. .035" diameter Tynex-A or Hahls Nylon filament impregnated with 180 grit silicon carbide granules. Equivalent to MidLite Grit, Scrub-Grit III, and Clean-Grit (Usually blue 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, Condor XL / SC8000 (Side Scrub). These brushes have a 5-1/2" center hole. Many machines require two, or in some cases, 1 or 3 brushes. Please check your machine before ordering. Often listed as 16". Replaces Nilfisk-Advance 56505838, 505838. Our Part Number AD 56505838