Cleaning is a breeze with the RNX bike gear and sprocket brush set. The ergonomic design makes cleaning easier than ever and saves you time. The sprocket tool is designed with curved teeth to help scrape heavy gunk and debris from your sprocket. The narrow brush has a thin design to easily reach between your gears and offers a deep cleaning. Perfect for use on sprockets, derailleurs, cranks, brake systems and pedals. Widely used on bicycles, motorcycles, mountain bikes, cross-country motorcycles, etc.