Freehub Flusher

This awesome tool improves on the original product, the Freewheel Injector, and permits the cleaning and lubrication of a cassette body without disassembly or removal of the very fragile outer shields. Using a 10mm Allen wrench, remove and pull the freehub and pop out the plastic seal on the back. Then simply insert the Flusher into the freehub to clean the body by injecting solvent using the provided syringe. Follow with an injection of your preferred lubricant.