These 12 inch brushes are designed to be used with the 24" line of IPC Eagle auto scrubbers, which are the CT70 walk behind, and the CT 80 ride on models. Each brush itself is 12 inches diameter, so there are 2 required for each model. The bristles on these brushes are impregnated with grit for heavy duty scrubbing of grout lines, and stripping of commercially tiled floors. Use on an inconspicuous area of flooring before scrubbing your complete floor, to test for quality of floor finish.
For additional options, including scrub brushes for light duty and everyday cleaning, take a look at our complete line of automatic floor scrubber brushes.