Muc-Off Nano Tech Bike Cleaner: 5L Pourable Bottle. This classic pink Bike Cleaner has incredible cleaning power because it contains Nano Technology that breaks down dirt and grime on microscopic levels while also caring for your bikes delicate finish. Muc-offs pink cleaner is biodegradable free from acids CFCs and solvents and its alkaline based so you can clean away with a guilt-free conscience. Its safe on all surfaces and its even disc brake rotor and pad friendly.Safe on all parts and surfaces including carbon fiberWill not harm seals cables brake pads or rotorsEffective road bike & mountain bike cleanerSafe on anodized metalAlkaline based and free from CFCs solvents or acidsNano Tech Formula cleans on a molecular levelBiodegradable