Synthetic chain lube, designed to resist fling-off (even in high speed applications). Sprays on blue, dries clear and provides a durable waterproof coating. Will not attract dirt, sand or grit. Superior anti-wear and corrosion protection for long chain & sprocket life. Suitable for chain applications, including O, X, and Z ring units, roller & non-sealed chains. Superior anti-wear and corrosion protection for long chain & sprocket life. Recommended for 420 & up chain sizes.