Simple Solutions RGB800 Grunge Brush The grunge brush uses 3-sided bristles allowing you to clean all 4 sides of your chain and the long bristle side lets you clean other parts of your bike like sprockets and wheels Easily adjustable for all sizes of motorcycle, ATV, and bicycle chains Replaceable bristles ensure the grunge brush will last a lifetime Regular component cleaning prevents premature wear and tear on chain and sprockets which assures smooth operation of the drive train