A stiff-bristled brush designed specifically for drivetrain work, the Muc-Off Drivetrain Brush reaches where a rag or toothbrush simply cannot — between cassette cogs, around jockey wheels, and into the links of a chain. The bristles are firm enough to shift built-up grime without scratching alloy or carbon components. A molded silicone grip keeps the handle secure even when your hands are wet and covered in degreaser. Drivetrain cleaning tends to get skipped because it's awkward — the geometry of this brush is designed to make it less so. Running it through a cassette or along a chain takes seconds when you have the right tool, and it helps your cleaning products do their job properly rather than sitting on top of surface contamination. Muc-Off Drivetrain Brush Specs at a Glance Bristles: Firm, scratch-resistant Handle: Molded silicone grip inserts Use: Cassette, chain, jockey wheels, drivetrain components Brand: Muc-Off