Scrubbing dirt from your tire’s and cassette after a long ride can be a chore, so we designed a specific brush to help make the job a little easier. 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 Tire & Cassette Brush and rinse.