- Universal pen for use on almost all surfaces\n- Suitable for overhead projection\n- Excellent smudge-proof and waterproof qualities on almost all surfaces\n- Dries in seconds, therefore ideal for left-handed users\n- Permanent, low-odour ink\n- Lightfast colours: black, brown\n- Weatherproof colour black\n- Stand-up STAEDTLER box\n- PP barrel and cap guarantee long service life\n- DRY SAFE – can be left uncapped for days without drying up (Standard atmosphere according to ISO 554)\n- Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft\n- Superb colour brilliancy\n- Line width S - superfine (approx. 0.4 mm)\n- Refillable with refill station 487 17