Muc-Off C3 Wet Ceramic Bike Chain Lube - 300ml Aluminum Refill Bottle. The secret to the C3 Ceramic Wet Chain Lube is its unique ceramic coating that provides incredible durability and long distance performance on all bicycle chains. The formulation in the chain oil uses Boron Nitride and Fluoro Polymers to ensure low friction for drive chain efficiency high performance and durability. The waterproof qualities of Muc-Off C3 Ceramic Wet Chain Lube also mean that your drive chain will excel in the harshest of riding conditions. C3 Ceramic Wet Lube is packaged in an ergonomic bottle complete with pipette system for easy use and application. Its also 95% biodegradable and is ideal for Road Cyclocross and MTB.Excels in wet muddy conditionsContains Fluoro Polymers & Boron Nitrides for efficiencyCreates Ceramic coating for chain protectionUltra long distance performance