Regular lubrication of bicycle chains addresses annoying squeaks and noises and extends the life of the chain and drivetrain components. Formulated using a proprietary blend of oils Park Tool CL-1.2 Chain Lube works great in wet or dry conditions. It penetrates reduces friction prolongs component life displaces moisture and protects parts from rust and corrosion. Compatible with all bicycle chains. Also works great as general-purpose light lubricant for use on bicycle brake and derailleur cables and housing spoke nipples and derailleur and brake pivots.