STAEDTLER Lumocolor permanent pen 318 F set 6

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. DRY SAFE - can be left uncapped for days without drying up. Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft.