AD 56409942 42" 16 Single Row .035"/180 Mid Grit Abrasive Cylindrical Scrub Brush for Nilfisk Advance 2042, BR 1100C-XL Scrubbers. Long lasting 180 grit impregnated Tynex-A or Hahls Nylon filament designed for medium / general duty scrubbing jobs. Equivalent to Scrub-Grit, Mid Lite Grit, and Clean Grit. These brushes are designed for everyday use on most flooring surfaces including older painted / epoxy coated floors. The small .035" diameter bristle fits into irregular surfaces and grout lines. Fits Nilfisk Advance 2042 Hydro Retriever and BR 1100C-XL riding floor scrubbers. Actual length 40.875". Two cylindrical brushes required. Priced each. Replaces Nilfisk Advance 56409942, 409942. Our Part Number AD 56409942