Versatile Use – In addition to wine glasses, use these markers on ceramic, wood, plastic, glass, and more. Brilliant Color Selection – Variety of metallic shades that make your designs stand out. Great for DIY Projects - Decorate windows for the holidays or mark them for safety, use on picture frames, bowls, figurines, storage containers, and mugs. Non-toxic and Safe - Conforms to ASTM D-4236 and EN71 standards, making them suitable for artists of all levels