Park Tool Cyclone Chain Scrubber Machine. Features: Updated version allows for the scrubber handle to be used on either side. Certain E-Bikes do not allow backwards pedaling when being cleaned Extra-large solvent reservoir for extra cleaning capacity Series of roller brushes thoroughly scrub chain clean Magnet in base traps metal particles Sponge dries chain upon exit and reduces mess Molded handle in casing eases utility Specs: Description: Cyclone Chain Scrubber Machine, CM-5.3