Universal pen for use on almost all surfaces. Suitable for overhead projection. Also suitable for use on CDs/DVDs. Excellent smudge-proof and waterproof qualities on almost all surfaces. Dries in seconds therefore ideal for left-handed users. Permanent low-odour ink. Stand-up STAEDTLER box. PP barrel and cap guarantee long service life. DRY SAFE û can be left uncapped for days without drying up (Test ISO 554). Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft. Xylene and toluene-free ink. Superb colour brilliancy.