Pyrene US 1006 is a heavy-duty, liquid cleaner formulated to remove difficult soils in agitated parts cleaning tanks. It will remove heavy oils, grease, carbon and many other tenacious soils. Because it is inhibited, it can be used to clean aluminum automotive parts prior to rebuilding. Pyrene US 1006 is a blend of alkalies, solvents, silicates, and chelates. It is not affected by hard water, and is safe on all metals.