This set of 2 hard floor scrubbing brushes is meant to be used directly with the Koblenz P-4000 portable scrubber. Great for scrubbing concrete, tile, and other hard floor surfaces. Each brush measures 6" in diameter, and has an 8 notch metal hub that connects it to the P4000 scrubber which ensures long life.

Please feel free to take a look at our complete line of floor scrubbing brushes for other options.