The Freeze-Off Super Penetrant By CRC is a unique formula that uses freeze-shock-action to immediately drops the temperature of the area in direct contact with the spray. The freezing effect cracks rusted surfaces allowing Freeze-Off Super Penetrant to reach deeper and work more effectively than other penetrates on the market. The Freeze-Off Super Penetrant helps loosen rusted and corroded nuts bolts hinges frozen locks couplings fittings etc! Perfect for automobiles boats watersports equipment household items tools agricultural equipment sporting goods pipes and plumbing fixtures. Contains 11.5 oz. Features: Uses Freeze-Shock-Action To Immediately Drops The Temperature Reach Deeper and Work More Effectively Than Other Penetrates Loosens Rusted and Corroded Nuts Bolts Couplings Fittings and Frozen Locks Specially Formulated To Dissolve Rust Gums and Corrosion Lubricating Film Prevents Corrosion and Displaces Water IMPORTANT SHIPPING INFORMATION: UPS 2nd Day Air Service is NOT available. This item must be shipped via UPS Ground Service ONLY. Ground Service can only be delivered within the 48 continental United States.