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.