A hard working, safer solution for removing hard water stains and build up on vehicles and radiators, effectively removing unsightly rust stains and surface corrosion from vehicle exteriors. Extremely effective on radiators and heater cores. Extends the life of the engine and helps the system run cooler longer by preventing limescale and rust build up. Removes surface rust on tools, cars, trucks and heavy equipment. Keeps windows clear and bright — non-streak. Safe on clear coat and paint, perfect for paint prep.