Finish Line Chill Zone 6oz/200ml Aerosol Penetrating Lubricant works like magic. This spray is designed to get rid of rust, cold welding or loosen any stuck components. The formulation combines a penetrating oil, with a chemical that gives an exothermic reaction, cooling the part rapidly to -45 degrees Celsius, causing the metal to contract rapidly. This chilling process creates micro cracks in the corrosion, allowing a release agent to penetrate & loosen up the rusted seized part leading to rust to flake off, & for seized parts to become un-seized Finish Line Chill Zone is arguably the industrys most advanced rust-busting penetrating lubricant. It simply works like magic! Before giving up on a frozen crank bolt, a rusted derailleur spring, a seized seat post, or discarding your rusted chain, give Chill Zone a shot. Bike parts that normally need to be replaced can be reconditioned to ride another day.