This nylon-bristle scrubbing brush fits IPC Eagle 28" walk-behind floor scrubbers and 28" compact rider scrubbers (not compatible with the CT230 industrial scrubber). Nylon bristles scrub concrete, tile, and finished floors without scratching, and hold up longer than softer bristle types. Each brush includes a red wear indicator that signals when it's time to replace. Two brushes are required per machine; replace both at the same time for even wear.