Wallet of 4 Markers. Nibs included are S – 0.4mm, F – 0.6mm, M – 1.0mm, B – 1.0-2.5mm. One for all… …and all for one! With the STAEDTLER Lumocolor universal pen, you can write on almost any surface. Whether in the office or workshop, at school or at home. Lumocolor can be relied upon to write on overhead film, glass, plastic, metal, wood and many other materials besides.