Maxima Bike Chain Guard is a 100% synthetic bike chain lube. The crystal clear surface active formula reduces rolling resistance of the drivetrain and improves shifting performance. Its deep chain penetration ensures quiet operation, protects drivetrain under load and is waterproof. It extends chain life by shielding it from dirt, grime & water. The Maxima Bike Chain Guard is ideal for use on both short and long rides. 120mL/4oz.