Introducing the Muc-Off Tyre & Cassette Brush. Scrubbing dirt from your tyre s and cassette after a long ride can be a chore, so Muc-Off designed a specific brush to help make the job a little easier. Stiff nylon bristlesMoulded silicon insets for a comfortable and steady gripMatt black finishSpecialist shape allows for easy application of cleaning product  Stiffer-than-average nylon bristles make short work of any grime your bike has picked up from the road or trail. Simply spray some of Muc-Off s pink Nano Tech Bike Cleaner on the affected areas, agitate with the Tyre & Cassette Brush and rinse.NB: To maintain performance of all brushes avoid use with boiling water and on hot parts. We recommend using warm water and allowing all hot parts to cool before use.