If we do absolutely nothing else to our bike between rides, we'll clean and lube the friggin' chain. A dirty chain is noisy and annoying, shifts poorly, and wears out our drivetrain much more quickly. The Park tool CG-2.2 Chain Gang Chain Cleaning System makes all of that badness go away for a happier bike. A chain gang cleaning system that works on all derailleur bikesEasily cleans the chain, freewheel cogs, and chainringsIncludes one scrubber, one brush, and an 8oz bottle of Bio ChainBriteMaterial[brush] nylonVolume8ozIncludesCM-5.3 Cyclone chain scrubber, GSC-1 GearClean brush, CB-4 Bio ChainBriteActivitybike maintenanceManufacturer Warrantylimited lifetime