Nuart Spray Crystal Clear, The Maters Choice. Permanent Clear Gloss Lacquer which protects Photographs, Drawings, Documents, Prints, Lettering, Metals etc. A heavy bonded clear acrylic resin which can not be removed with mild solvents, recommended as a protective coating for Prints,Drawings Photographs, Documents, Crafts,Copper, Metal, Wood,etc 400g Ozone Friendly