WD-40, loosens and removes stubborn dirt from soiled parts. It stops squeaks and creaks, expels moisture from metal surfaces, removes many forms of wax, tar, grease and glue residues and leaves a protective layer against corrosion. Displaces moisture from electrical parts and electronics and prevents current leakage. It penetrates and loosens rusty parts, such as nuts, bolts and controls. Loosens and lubricates stuck mechanisms, bolts and nuts. Lubricates springs and prevents squeaks and creaks.