Park Tool CM-5.2 Cyclone Chain Scrubber Keeping your chain clean is an essential part of good bike maintenance. The CM-5.2 Cyclone Chain Scrubber uses an extra large solvent reservoir and a series of rotating brushes to get chains really clean. CM-5.2 FEATURES Magnet at bottom of solvent reservoir draws particles scrubbed from chain, effectively keeping them from being redistributed on the chain during cleaning Durable sponge material draws solvent from the chain as it exits the Cyclone, reducing drips and mess Works with all multi-speed bikes (5-, 6-, 7-, 8-, 9-, 10-, and 11-speed) and some single-speed models Holds 2 fluid ounces of solvent CM-5.2 features stronger locking clips and a more ergonomic handle