PJ1 Black Label HD Chain Lube contains synthetic lubricants for superior performance to provide HEAVY DUTY chain lubrication. This thin-bodied formula penetrates into chain-links and thickens to provide an extra ordinary slippery, shock absorbing film. This long lasting, water repelling film absorbs pin bushing shock to reduce chain stretch. It’s resilient coating reduces chain stretching and shock that normally is encountered during off-road racing and riding. PJ1 Displaces and repels water and will not harden and crack like wax. PJ1 BLACK LABEL™ is used around the world by powersports professionals and enthusiasts to increase chain life, reliability and performance.