Park Toolâ€™s GSC-1 GearClean Brush has a unique design. A large comfortable handle with a curved, toothed-end reaches dirt deep between the gears, & tough nylon bristles clean the derailleur & chain. Saves wear & tear on your chain & freewheel. Works great on brakes or other places where dirt collects.
GSC-1 Features 10-speed compatibleHandy size for quick cleaning anywhereMade of sturdy nylon