B'laster PB Penetrating Catalyst Penetrant is a powerful and concentrated catalyst designed to release the surface tension of frozen parts quickly and effectively. It s into a non-evaporating lubricant that helps protect against further rust and corrosion, making it i for ing stubborn, rusted, or immobilized components such as nuts, bolts, screens, joints, and pipe threads. This penetrant works fast, reaching into hard-to-access cavities to ensure thorough treatment. It is formulated without dangerous vinyl methylene chlorides, gasoline, kerosene, fuel, or oils, ensuring a safer and more reliable solution for your maintenance needs. The product comes in an 11 oz aerosol can, providing convenience and ease of use. Model Number: 16-PB