Park Tool GSC-3 Drivetrain Cleaning Brush

The Park Tool GSC-3 Drivetrain Cleaning Brush is specially designed for cleaning hard-to-reach areas of the bicycle drivetrain. The long, stiff bristles are narrow enough to reach between the gears of tightly-spaced modern cassettes, while the slim contoured end is capable of picking grit and grime out of tight spaces such as derailleur pulley wheels.

This dual-sided brush is the perfect tool for keeping your bike's drivetrain clean and running smoothly. With its specialized design, the GSC-3 is the ideal brush for cleaning hard-to-reach areas of your bicycle.