Liquid Wrench Multi-Purpose Aerosol Lubricant. Lubricates, protects and penetrates. Lubricates locks, hinges, casters, appliances, sewing machines, bicycles, skates, toys. Protects power tools, hand tools, lawn mowers, valves and fittings against rust and corrosion. Penetrates and frees rusted nuts, bolts, screws, etc. It drives the moisture away.