PB Blaster is a penetrating oil designed to loosen rusted or corroded parts. It is commonly used in automotive and mechanical applications to free stuck bolts, nuts, and other fasteners. The product works by penetrating the rust and creating a barrier that helps prevent further corrosion. This versatile lubricant can also be used for various household tasks, such as freeing squeaky hinges or loosening stuck tools. PB Blaster is available in aerosol cans, making it easy to apply in tight spaces. Its effectiveness and ease of use have made it a popular choice among DIY enthusiasts and professionals alike.