Park Tool Replacement Brush - GSC-1 Trek N Ride Quick-Fit Spacer Kit (3x5mm &

Quick-Fit Spacer Kit (3x5mm & 3x10mm)

including speed

The C3 chamois is constructed by using an innovative process called Carving

Drivetrain:

Park Tool Replacement Brush - GSC-1 Trek N Ride Quick-Fit Spacer Kit (3x5mm &DESCRIPTION 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.