The Muc-Off Claw Brush boasts a high-quality construction with three brush heads that feature tough nylon bristles and an integral scraper for mud de-clogging. It is perfect for cleaning your bike's chain, cassette, mechs and sprockets. 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 Claw Brush is a must-have for keeping your bike factory fresh after a gnarly ride.