PJ1 Black Label Chain Lube contains synthetic lubricants for superior performance. PJ1 BLACK LABEL CHAIN LUBE FEATURES AND BENEFITS: Ideal for use on non-O-ring chains by providing a super-tacky formula that won't fly off Penetrates deep into the chain Lubricates pins, rollers, side plates, and sprocket Reduces chain stretch and the need for frequent adjustments Has a memory to bounc... More info »