Sprayon® LU103 Heavy-Duty Rust Penetrant (Rust Breaker®) Non-Aerosol Spray (Liqui-Sol™) quickly loosens rust while penetrating grease and dirt. This high-performance, non-flammable penetrant is transparent and non-staining. With properties of a light film lubricant, Sprayon LU103 Heavy-Duty Rust Penetrant Non-Aerosol Spray (Liqui-Sol) also displaces moisture and acts as a corrosion preventative. Part of the Liqui-Sol™ Non-Aerosol Spray Program which uses no flammable propellants and is reusable & 100% recyclable.