Park Tool GSC-1 GearClean BrushSave wear and tear on your chain and freewheel by using the Park Tool GSC-1 GearClean Brush with it's uniquely designed gear brush.
- Perfect for getting gunk out of your cassette or freewheel
- Toothed end loosens grime, and the stiff brush gets rid of it
Park Tool GSC-1 GearClean Brush
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