Park Tool Replacement Brush - GSC-1 Pumps 1800 max lumen output on

1800 max lumen output on Boost Mode

Suitable for: Avid BB5 Mech

sodium chloride in CARBORANCE is added for optimal rehydration

When detecting braking or headlights(>50lux) from rear approaching vehicles

WHO CAN TAKE COLLASTEAD

Park Tool Replacement Brush - GSC-1 Pumps 1800 max lumen output onDESCRIPTION The original replacement brush for the most popular cassette and drivetrain cleaning brush The GearClean Brush (GSC 1) from Park tool. This replacement helps you save money will reusing the old GearClean brush head longer and longer. The tough nylon bristles clean the derailleur and chain. Saves wear and tear on your chain and freewheel. Works great on brakes or other places where dirt collects.