he secret to the Muc-Off C3 Ceramic Wet Chain Lube is its unique ceramic coating that provides incredible durability and long-distance performance on all bicycle chains. The innovative formulation in this chain oil also uses Boron Nitride to ensure ultra-low friction for peak 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, no matter how harsh the weather!