CRC 5.56 - Multi-Purpose product for lubricating, protecting and penetrating metals and corrosion CRC 5.56 is a multi-purpose product with superior penetrating power that breaks through rust and corrosion while it clears away scale and dirt. This penetrant spray eliminates the need for many disassembly operations. 5.56 Can also be used as a spray lubircant for smooth action, and to silence annoying squeaks and squeals. CRC 5.56 protects metals against corrosion and displaces moisture to help start wet engines. As a leader in product quality, performance and regulatory compliance, CRC's product line offers the best of the best when it comes to workshop consumables such as lubricants, cleaners and gasket makers for use on all types of automotive surfaces, materials and parts. The research and development team at CRC are continually innovating, researching and testing their products to provide you with the best results to get your job done faster, easier, and ultimately safer every time you use their products. CRC industries' on-site manufacturing procedures allows optimal quality control of all products and production processes to ensure there are no defects or nasty surprises when using their products on your cars. Their whole library of raw materials and finished goods are subject to the highest, most stringent testing and critiquing by their quality control department, guaranteeing you a quality result every time you use a CRC product. With a massive range to accomplish any number of tasks in your garage from cleaning up oil spills and stains, assembling a fresh engine for your project car or even cleaning your windows, CRC have a product to make the process simple and fast. Whilst CRC's products are most at home in the garage, shed or workshop, their uses are only limited to your imagination.