Park Tool GSC-1 GearClean Brush Groupe Thanks to its base and

Thanks to its base and barrel made of steel

the T70 tread offers weather-resistant dependability

15 mm wrench — compatible with most bicycle wrenches with pedal flats

Hyperglide technology

BRAKE LEVERS :: Shimano SLX

Park Tool GSC-1 GearClean Brush Groupe Thanks to its base andThe GSC 1 is specially designed to free your bicycle drivetrain from muck and grime. The comfortable handle features tough bristles clean the derailleur and cassette, and a contoured toothed end to reach dirt deep between the gears. Saves wear and tear on your chain and cassette. Also works great on derailleur pulleys, brakes, or other places where dirt collects. Mfr Claimed Weight TBC