Muc-Off's high performance Chain Cleaner is specifically formulated to remove heavy chain grime quickly and safely. Muc-Off's innovative formula breaks down oil, grease and grime leaving the entire chain sparkling clean & contaminant free. What's more this bike cleaner uses no harmful acids, CFC's or solvents and is fully bio-degradable. Suitable for use on all chain types, including O-ring. It will leave your chain squeaky clean, without the squeak.