The patented Cyclone Chain Scrubber is made with a tough plastic nylon and has replaceable cleaning brushes, Part RBS5 Replacement Brush Set, for extended product life. The ChainMate features an inline chain track for less chain resistance. Made for use on all derailleur and most 3speed and coaster chains. A wide profile and a wide base provide stability, and a large reservoir provides extra solvent capacity. Park Tool ChainBrite is recommended.