BIC - BICPMER12AST Long-lasting, ReVolution Permanent Markers feature sleek gray barrels made from recycled plastic. Paperboard used in this packaging is also made of recycled content. Ink in bold blue, green, black and red ink is perfect for any and all projects. It's fine, precision bullet nib is great for creating vivid marks on glass, metal, photos, plastic and much more. These markers won't dry out for 2 weeks if they're left uncapped. Reduce your environmental impact and get quality permanent markers you can trust. This product conforms to ASTM D-4236 on labeling art supplies.