Park tool cyclone chain scrubber cm5 2the patented cyclone chain scrubber is made with a tough plastic nylon and a replaceable cleaning brush set is available part rbs 5 replacement brush set for extended product life the chainmate features an in line chain track for less chain resistance made for use on all derailleur and most 3 speed and coaster chains a wide profile and a wide base provide stability and a large reservoir provides extra solvent capacity park tool chainbrite is recommende