STAEDTLER box containing 4 Lumocolor permanent in assorted colours, line width M, approx. 1.0 mm- 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- Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft- Superb colour brilliancy- Line width M - medium, approx. 1.0 mm