The Muc-Off Tire and Cassette Brush makes scrubbing dirt from your tires and cassette after a long ride a little easier. Stiffer-than-average nylon bristles make short work of any grime your bike has picked up from the road or trail. To maintain performance of all brushes avoid use with boiling water and on hot parts, use warm water and allow all hot parts to cool before use. The Muc-Off Tire and Cassette Brush is the ultimate cleaning companion for keeping your bike looking factory fresh after a gnarly ride.