AD 56505922 18" .060"/80 Black Grit Scrub Brush for Nilfisk Advance, Nilfisk-Kent, and Nilfisk-Euroclean Floor Scrubbers and Floor Buffers. Our second most abrasive brush. .050" diameter DuPont Tynex-A or Hahls Nylon filament is impregnated with large abrasive 80 grit silicon carbide granules. These heavy grit brushes can be used on older shop flooring with heavy packed debris, older sealed concrete, and unsealed concrete. The .060"/80 Black Grit brushes can also be used for stripping of tile, terrazzo, quarry tile, and other similar hard surfaces. Slightly lighter than Magna-Grit, .065"/46 Heavy Grit. Equivalent to Dyna-Grit 80, .060"/80 Black Grit. Commonly black in color. Replaces black and brown floor pads. Not for use on newly painted flooring. Tynex-A or Hahls filaments outlast standard poly and Nylon filaments. We also offer a heavier .070"/46 .065"/46 Heavy Grit scrub brush (AD 56505921), or a lighter mid grit .035"/180 grit scrub brush (FC 56505928). Includes standard universal NP92 (gold cap - AD 56163431) clutch plate. Some other models require a NP47 (silver cap - AD 56163430) clutch plate (if an NP47 clutch plate is needed, please order AD 56505058). Please check your existing brush set up before ordering (if unsure about clutch plate, please reference extra clutch plate in the special instructions box at checkout and we will include both). Most models manufactrued after 1997 were equipped with the newer Gold Cap NP92 clutch plates. Fits Nilfisk-Advance floor machines including Pacesetter 20, 20HD, 20SD, 200, 200HD, Euroclean ECFM 20, Select Line 20, 20TS, Matador 20, SD 20, Spin 20, Convertamatic 20B, 200B, 200LX, 200BD, Shadow 20, SD 5120, Nilfisk BA 500, Hydro-Retriever 200HD, and others. Most machines require one brush. Priced Each. Replaces Nilfisk-Advance 56505922. Our Part Number AD 56505922