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Introducing Seymour's 15oz Penetrating Oil - designed for professional-grade penetration and loosening of rusted, stuck or corroded nuts, bolts, and fasteners. Our oil is formulated with a blend of high-viscosity, high-flashpoint solvents that are safe on skin and safe for the environment. Ideal for industrial and home applications, it can be used on metals including steel, aluminum, bronze, and cast iron. Its long-lasting penetration capabilities allow it to soak into even the most stubborn crevices and fastenings, making it a must-have tool for any mechanic, machinist or DIYer. Seymour's 15oz Penetrating Oil - unlock tough jobs today!