Best Seller | Park Tool RBS-25 Replacement Brush and Sponge Cartridge for CM-25 Chain Scrubber Specially designed brushes for cleaning hard to reach areas on most bicycles. Includes two rotating brushes two sponges and two wicking pads already installed in a composite cartridge ready to snap into the CM-25 Professional Chain Scrubbe more | | $24.86 $22.76 go to store |