Numatic Polyscrub Scrubbing Brushes Multiple SizesNumatic Polyscrub Scrubbing Brushes These scrubbing brushes are designed for use with machines from that Numatic floor care range. They come in a wide range of sizes to suit different sized machines. The poly scrub brush is generally used for scrubbing applications on machines working between 150rpm and 230rpm. These brushes can be fitted to both scrubber driers and rotary floor cleaners, however, it is important that you get the correct size and