Park Tool Cyclone E-Bike Chain Scrubber Cleans bicycle chain quickly, easily, and effectively - without the hassle and mess of removing the chain from the bike Uses a large solvent reservoir, hundreds of rotating bristles, and a two-step cleaning process to get chains really clean, improve shifting performance, and extend the life of the chain and other expensive drivetrain parts Works with all multi-speed bikes (5, 6, 7, 8, 9, 10, 11, and 12-speed) as well as some single-speed models and e-bikes Strong magnet at the bottom of the fluid reservoir holds metallic particles scrubbed from the chain Special wicking sponge draws solvent from the chain as it exits, minimizing drips and mess Sturdy handle makes the Cyclone easy to use and control Holds 2 fluid ounces (59ml) of solvent