FINISH LINE GRUNGE BRUSHKeeping your bike clean is essential to your bike working properly. You wouldn't drive your car with dirty oil in the engine, so why would you ride your bike with a dirty chain? The Finish Line Grunge Brush is designed to make your chain and gear cleaning quick and easy. It features a U-shaped head so you can clean the chain on all four sides. The stiff bristles get deep into the chain and the long bristles on the end of the brush are perfect for getting into the cassette and other parts on the bike. Features Heavy duty stiff bristles clean deep and last a long time Removable bristle blocks allow easy cleaning of the brush U-shaped head so you can clean all four sides of the chain | Finish Line | Grunge Brush Grunge Brush, Clean Drivetrain, Chain