Posca 1.5 mm Fine Tip Paint Markers write anywhere! The bullet tip is great for fine lines and detail work.Opaque, water-based acrylic paint is non-toxic and acid-free. Odorless, light-fast, Xylene-free, lead-free and waterproof when dry. Mark on metal, wood, glass, plastic, plaster, canvas and more. Excellent for signs exposed to the weather. Great for temporarily marking up glass windows. Popular with surfboard paintersFluorescent colors are used extensively by auto dealers to mark windows with advertisements and collision services.Marks are removable from non-porous, sealed surfaces like glass, plastic and chalkboards. Will bond permanently to wood, clay pots, posterboard, plaster and other porous materials.