With the Chain Cleaner Deluxe you can clean your chain in no time. The rotating brushes scrub every link to the smallest corner so that your chain shines like new. Fill the bottom of this handy device with degreaser and then install it on the chain. With the folding clip you can mount the Chain Cleaner to the rear derailleur. Then turn the pedal so that the chain runs smoothly through the unit. After a few rotations, your chain will be cleaned and ready to be lubricated.