The Grunge Brush™ makes cleaning your bike fast and easy. It helps prevent premature drivetrain wear by deep cleaning chains and gears to remove deeply
embedded grime. Its ergonomic and patented design allows you to clean all the hardto-reach places in seconds. It scrubs a bicycle chain with horseshoe shaped bristles, a ¼ turn ensures that all 4 sides are cleaned. The long bristles at the other end clean chainrings, cassette, derailleurs, pedals, tire treads and more.