Universal pen for use on overhead film and almost all surfaces; also suitable for use on CDs/DVDs DRY SAFE: The pen can be left uncapped for days without drying up (test ISO 554) Airplane-safe: An automatic pressure equalization prevents the pen from leaking on board aircraft Excellent smudge-proof and waterproof qualities on almost all surfaces Dries in seconds, therefore ideal for left-handed users Permanent, low-odour ink Superb colour brilliancy With clip PP barrel and cap guarantee long service life Line width S Lumocolor permanent universal pens are perfect for being used on the following surfaces: Paper, cardboard, film, plastic, metal, polystyrene, glass, porcelaine, wood, leather and stone.