AD 56505943 15" .018"/500 Grit Light Abrasive Disc Rotary Scrub Brush for Nilfisk Advance Scrubbers. Our lightest grit scrub brush for light to moderate soils. Great for light to medium scrubbing and top 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. 500 grit brushes can also be used for spray buffing tile flooring. Replaces white or red floor pads. .018" diameter Tynex-A or Hahls Nylon filament impregnated with the small 500 grit silicon carbide granules. Equivalent to AgLite Grit, Dyna-Scrub and Mal-Grit Lite (Usually light gray, light green or red in color). 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 56505943, 505943. Our Part Number AD 56505943