- Universal pen for use on almost all surfaces - Suitable for overhead projection - Excellent smudge-proof and waterproof qualities on almost all surfaces - Dries in seconds, therefore ideal for left-handed users - Permanent, low-odour ink - Lightfast colours: black, brown - Weatherproof colour black - Stand-up STAEDTLER box - PP barrel and cap guarantee long service life - DRY SAFE – 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 - Lightfast colour black - Line width fine approx. 0.6 mm - Refillable