Great brush for getting into the nicks and crannies of your bike after a heavy day of "dirt farming". If you forgot to pack the gaps in your frame with expandable foam this claw / brush is great for cleaning your bike in spaces where water might not do as great a job. It has 3 brushes for cleaning the chain, cassette and sprocket and an integrated scraper for cleaning derailleur pulleys/jockey wheel that always seem to get mucked up. Recommend wearing gloves when using.
This set is not only great because it provides everything you need to clean your bike, but also gives you a place to put it all (the tool box). The cleaning products are high quality and work! They also have instructions on each of the cleaners and brushes to let you know how they are used. The spray on wax leaves my bike very shiny to the point you can see your reflection. I've ridden on gravel trails and this cleaning kit gets my bike looking like new every time I use it.