The Park Tool CG-2.4 Chain Gang Cleaning System contains everything needed to quickly and easily clean the chain, cassette and chainrings. The Cyclone Chain Cleaner makes easy work of getting your chain clean and the Gear Clean brush allows you to clean the rest of your drivetrain such as your chainring, cassette and jockey wheels.Prolong drive train life with this excellent kitContains a Cyclone chain cleaner, Gear Clean brush, and 8 oz. of CB2 Citrus Chain Brite cleaning fluidEverything you need to keep the drivetrain system clean and running super smoothSuitable for derailleur gear, hub gear, and single-speed bikesMade in the USA