I bought one of these for cleaning dirt bike chains. I works okay to get the dirt off, but doesn't work too well getting old lube and grease off, even with a spray of chain cleaner. It would work better if the two brushes that get the outside of the chain were a little closer together for tighter fit on the outside of the chain. I still use it quite often because it is much easier to use compared to just a standard flat brush.(Posted on 12/07/2018)