AD 56409941 42" 16 Single Row Stiff Nylon Cylindrical Scrub Brush for Nilfisk Advance 2042, BR 1100C-XL Scrubbers. Durable and long lasting stiffer .022" Nylon filament is great for medium duty scrubbing jobs on sealed, unsealed and harder sealed sensitive flooring . The stiffer Nylon bristle is great for scrubbing sealed and unsealed concrete as well as tile, stone, and terrazzo flooring. Designed for general duty scrubbing tasks where light to moderate debris is present. Nylon filaments outlast general duty polypropylene brushes. Equivalent to Hard Nylon, Nylon, Nylex. 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 56409941, 409941.