The PB Blaster acts as a powerful， concentrated catalyst to release the surface tension of frozen parts. Then it converts into a non evaporating lubricant to protect against further rust and corrosion. Penetrates fast into hard-to-reach cavities to free stubborn， rusted， or immobilized parts; nuts， bolts， screens， joints， pipe threads， and more. Contains no dangerous vinyl methylene chlorides， gasoline， kerosene， fuel， or cheap oils.