Cleaning is a breeze with the RNX bike drive train brush. The ergonomic design makes cleaning easier than ever and saves you time. The double-headed bicycle chain cleaning brush design gives you two brushes in one. One end is dedicated to the chain while the longer bristle end cleans the sprocket, derailleur, crank, brake system and pedals. Widely used on bicycles, motorcycles, mountain bikes, cross-country motorcycles, etc.