Ideal for writing on CDs and DVDs, this Staedtler Lumocolour pen has an extra soft tip to prevent damage to sensitive surfaces and specially formulated ink, which will not penetrate to the data storage layer. Both smudge-proof and waterproof, the ink is fast drying for quick, convenient use. With a superfine line width of 0.4mm, this pen is great for writing clearly and neatly on the surface of the CD. This pack contains 10 black pens. Marker for CDs, DVDs and other glossy surface Ink does not transfer to data storage layer Smudge-proof and waterproof Extra soft tip Ink is fast drying Superb colour brilliancy 0.4mm line width Barrel colour: Black Ink colour: Black Pack of 10