Bicycle Chain Wheel Cleaning Brushes Scrubber Clean Tools Set Brand new and high quality. Quickly and easily cleans chains, freewheel cogs, and chainrings. Works with all multi-speed bikes and some single-speed models. Dirty drivetrains shift poorly and wear out prematurely. Incorporates an extra large reservoir and two step cleaning process to draw metal particles away from chain. Effectively keeping them from being redistributed on the chain during cleaning. It is easy to control and use.