The Muc-Off Soft Washing Brush has been designed with a sintered bristle compound so you can clean your bike frame and components while also caring for delicate finishes. Its unique design features an impact resistant, dual density handle that won't slip in extreme conditions, an oversized head for fast cleaning of large areas and rubberized impact zones for maximum protection. 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 Soft Washing Brush will leave your ride spotless without leaving any marks on your pride and joy.