Superior Quality Staedtler Black Refillable Waterproof Universal Marker Pens For Use On Almost All Surfaces. Perfect For CD & DVDs With Excellent Smudge Proof, Colour Brilliance & Waterproof Qualities - The Specially Designed Ink Dries In Seconds - Ideal For Left Handed Users. Permanent, Low Odour & Dry Safe Meaning Can Be Left Uncapped For Days Without Drying Up.