WD-40 Multi-Use Product is a versatile, all-purpose lubricant and cleaner that can be used on a variety of surfaces. It can be used to lubricate moving parts, protect metal from rust and corrosion, remove grease, grime, and adhes
From Wikipedia
WD-40 is a penetrating oil manufactured by the WD-40 Company based in San Diego, California. Its formula was invented for the Rocket Chemical Company in 1953, and it became available as a commercial product in 1958. It acts as a lubricant, rust preventive, penetrant and moisture displacer. There are specialized products that perform better than WD-40 in many of these uses, but WD-40's flexibility has given it fame as a jack of all trades.