Chain cleaner can be used to clean the chains of bicycles, motorcycles, etc. Or clean the pinion gear, derailleur, crank pair, brake and pedal.A good Chain Brush is vital to the longevity of your drivetrain. Keeping your chain cleaned, lubed and adjusted prolongs the life cycle of your sprockets and chain. SHENBA's Chain Brush makes the job of cleaning your chain and sprockets less of a chore.