AD 56505948 15" .035"/180 Scrub-Grit Mid Grit Abrasive Disc Rotary Scrub Brush for Nilfisk Advance Scrubbers. Our third heaviest 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). Replaces blue or green floor pads. Filament is set in a 14" diameter solid heavy duty plastic molded block. Includes 3 drive lugs mounted around a 5.53" center hole. Fits Nilfisk Advance scrubbers and sweeper/scrubbers including Captor 4300, 4300-AXP, Nilfisk CR 1100, CR 1100B. 3 Required Per Unit. Priced Each. Replaces Nilfisk-Advance 56505948, 505948. Our Part Number AD 56505948