Bicycle Components & Accessories

Park Tool GSC-3 - Drivetrain Cleaning Brush This dual-sided brush is specifically designed for cleaning hard-to-reach areas of the bicycle drivetrainThe long, stiff bristles of the GSC-3 are narrow enough to reach between the gears of tightly-spaced modern cassettes, while the slim contoured... Park Tool GSC-3 - Drivetrain Cleaning Brush