Review on 🚴 16 fl oz/472 ml Bottle of Park Tool CB-4 Bio Chainbrite Bicycle Chain & Component Cleaning Fluid by Matthew Allen

The product was received in poor condition, apparently it was lucky that the bottle did not burst as there was a large dent on one side, as if from a strong blow. This is in no way the fault of Park Tool or this product, solely the fault of Revain/USPS for poor packaging, handling and shipping. However, this product works great. When used correctly with Park Tool Chain Cleaner (CM-5.2) by rinsing first with this cleaner and then with soapy water, the result is a nice clean chain.