Durable double-ended brushThe ergonomic handle is paired with two purpose built brush featuresThe tapering length bristles up front are designed to scrub the intricate surfaces of chains, chainrings and cassettes while at the opposite end, longer, stiffer, larger-diameter bristles reach deep between the cassette cogs removing even the deepest dirt and grimeIdeal for scrubbing cogs, derailleurs, and chainringsSolvent resistant synthetic handle and bristlesAlso works great for applying degreaser to drivetrain partsNot recommended for oral use.Material CompositionNylon & Polyethylene