WD-40 Multi-Use Product One Gallon More of a good thing! Like all WD-40 Multi-Use Products this 1 gallon drives out moisture and quickly dries out electrical systems to eliminate moisture-induced short circuits More product allows for heavy-duty usage. Acts as a corrosion inhibitor to shield against moisture and other corrosive elements to prevent rust This size is ideal for soaking and dipping. Frees sticky mechanisms, loosens rust-to-metal bonds and helps release stuck, frozen or rusted metal parts Buying in bulk is economical. Lubricates moving parts such as hinges, wheels, pulleys, rollers, chains, and gears Removes grease, grime, gunk, gum, tar, sap, super glue, sticker residue, and other sticky stuff from multiple surfaces