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.
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Size chart
| SIZE | HEIGHT |
| X- Small | 3'9-5'1 |
| Small | 5'2-5'5 |
| Medium | 5'6-5'9 |
| Large | 5'10-6'1 |
| X-Large | 6'2+ |