The finish line chill zone has been developed to free up seized parts the spray is ideal to get rid of rust cold welding or loosening any components that are stuck the spray is formulated with a penetrating oil with a chemical that gives an exothermic reaction cooling the part rapidly to around 40 degrees celsius this causes the metal to retract rapidly the process creates micro cracks in the corrosion allowing the agent to penetrate under and loosen up the rusted or seized part this w