The STABILO Write-4-All fine permanent marker will write on almost any surface, including glass, metal, plastic, wood, photos, foil, ceramics, card, CDs and DVDs. The fine tip writes a line width of 0.7mm and the permanent ink is heat proof, frost proof, water proof and lightfast. This pack contains 4 assorted markers. Features Ability to write tested on over 1,000 surfaces - e.g. glass, plastic, photos, ceramic, foil or metal Plastic tip is tougher than other brands and therefore writes clearly on hard surfaces Reliable under extreme conditions such as cold, heat or rain, and therefore suitable for freezers or greenhouses For delicate and safe labelling of CDs and DVDs Dries quickly, light- and frost-resistant, permanent Available in 3 line widths - Superfine, Fine, Medium Available in the 4 most commonly used colours Ventilated cap and long cap-off time Permanent marker for use on most surfaces Fine tip writes a 0.7mm line width Writes on glass, metal, plastic, wood, photos, foil, ceramics, card, CDs and DVDs Water proof, heat proof, frost proof and light fast Leaves a lasting impression on anything from freezer bags to garden tags.