Finish Line Grunge Brush brand_hase if you have difficulty using

if you have difficulty using a twist shifter

works great on bikes with rack or fender mounting holes on the frame near the rear dropouts

Note 3: Outer Diameter of the boom is 45

weighing only 70g each

Gear Range:  21 - 66"

Finish Line Grunge Brush brand_hase if you have difficulty usingChain and gear cleaning has never been faster or easier! Scrub the chain with the compact bristles of The Grunge Brush to clean all four sides of a chain. Use the long bristled end to clean other components like sprockets, derailleurs, crankset, brakes and pedals. Regular component cleaning prevents premature wear and tear on chain and sprockets, eliminates chain skipping caused by dirt and grunge, and assures smooth operation of drive train and