Loosens stiff, rusted screw connection quickly and reduces the friction as well as the effort when loosening. This considerably reduces the danger of damaging the threads or breaking off the screw connections. Meguin Rust Solvent was developed to help loosen all screw connections without problems or damage in industry and the workshop, on motor vehicles and on all household and hobby appliances, etc. Application: Generously spray the screw connections to be treated. Depending on the condition of the screw connection, briefly allow the Rust Solvent to take effect, repeating the procedure as needed, and carefully loosen the screw joint.