Chassis, Suspension ' Brakes ECK®, Electrolysis Corrosion Kontrol is a single application coating that creates a barrier between metals. It contains zinc, which acts as a sacrificial element by dispelling the electrical charge created when metals come in contact with electrolytes. ECK is less expensive than other products and more effective. It is also easier to apply by spray or brush. One application of ECK may last 10 years or more and won't crack, dry, peel or fall off. ECK is available as a quart-size, brush-on paste or convenient 12 oz. or 15 oz. aerosol spray.