The Park Chain Gang Chain Cleaning System is your ideal tool to efficiently clean and maintain bicycle chains, freewheel cogs, and chainrings. This comprehensive system includes the CM-5.3 Cyclone Chain Scrubber, GSC-1 GearClean Brush, as well as an 8 oz. bottle of Bio ChainBrite, allowing you to tackle each part of your chain with ease. Optimize your bicycle's performance and efficiency with the Chain Gang!