The Free All Deep Penetrating Oil with Precision Straw from FedPro sprays penetrating oil in a wide-aim nozzle or through the straw-nozzle for pinpoint accuracy. Free All penetrates rust, scale, and corrosion to free parts and assemblies. Designed to free threaded pipe connections, rusted machine screws, bolts, nuts, clamps for mufflers and tail pipes, pillow blocks, and universal joints and locks. It also loosens red and white lead, tar, grease, carbon, and graphite deposits. Free All doesn't contain silicones, making it safe in paint and shop environments.