Elmer's Painters (R) Opaque Paint Markers Medium Point 5/Pk - ELMERS-Painters Opaque Paint Markers Medium Tip 2.05mm 5/Pkg Neon Colors. Permanent and Streak-Free. Non-Toxic. Acid Free. Ideal for use on wood, plastic, clay, glass, metal, faom board, fabric, and terra cotta. Conforms to ASTM D4236. Made in USA.