Sudbury - Miracle Coat Zipper & Snap Wax -.6 oz. - 435. Great for both plastic and metal: canvas boat snaps, zippers, hinges, locks, luggage and wet suit zippers. One application lasts up to three months, non toxic, biodegradable, protects against corrosion and salt spray. Easy applicator tube.. Features:. Size -.6 oz. Tube