Keeping your chain clean is an essential part of good bike maintenance and when a tool is this easy to use there is no reason not to keep your chain clean at all times the park cm5 cyclone chain scrubber is suitable for all types of bicycle chain including multi speed and single speed with an extra deep reservoir to hold degreaser or chain cleaning fluid the internal magnet catches all metallic particles and prevents them from being redistributed on the chain the sponge material soaks up