The WD-40 Specialist Rust Release Penetrant Spray contains 11 oz. of lubricant that can be applied to components that have been rusted together to release the rusted bond and protect the surfaces from future corrosion. The lubricant’s proprietary formula penetrates into crevices to quickly free rusted threads, nuts, bolts, locks, and chains. It can be used on metal, plastic, and rubber. The 11-oz. aerosol canister has a permanently attached, hinged straw, which offers two spraying options: The straw flips up to provide a precision stream of lubricant for controlled application and flips down for a fan-shaped spray from the nozzle for faster application over large areas. Industrial lubricants can be found in most machinery performing one or more functions, including reducing friction and wear, preventing components from adhering to each other, distributing loads more evenly, dispersing heat away from moving parts, and preventing corrosion. Although many materials are used as lubricants, the most common are oil (also called fluid lubricants) and grease because of their versatility. Oil lubricants contain either a petroleum or synthetic base, the properties of which are modified by the addition of various additives. Grease lubricants, a mixture of oil lubricant and a thickening agent, have a thicker consistency than oil, enabling use wherever liquids cannot be retained and requiring less frequent changes.