Muc-Off Bio Chain Doc chain washer The Muc-Off Chain Doc chain washer allows you to clean the chain with minimal effort This innovative chain washer combines sturdy rotating brushes and the incredible degreasing power of Muc-Off Bio Chain Cleaner, bringing your chain back to life after a few seconds ... 19 to be exact. The Chain Doc chain washer is supplied with a pack of Muc-Off Bio Chain Cleaner, making this product ready to use exactly when you take it out of the box. Features Chain thoroughly cleaned with minimal effort. Completely eliminates mud, dirt and grease. It does not contain aggressive chemical agents. Compatible with all models of chains currently on the market. Long lasting nylon bristles. Bio Chain Cleaner included Quick and easy to use. 100% biodegradable. Quantity: 400 ml.