They say that cassettes are ornery because they got all them teeth but no toothbrush. The Park Tool GSC-1 Gear Clean Brush has a unique design with a large comfortable handle with a curved, toothed-end that reaches dirt deep between the gears, and tough nylon bristles that clean the derailleurs and chain. Keeping your components clean will help prolong their life and allows them to perform optimally. It works great on brakes or other places where dirt collects.

FEATURES

• Compatible with most 5 - 12-speed cassettes and freewheels
• Made of sturdy nylon and comes in a handy size for quick cleaning anywhere