This premium Staedtler Lumocolour pen has been specially developed for use on overhead projection film for stylish presentations. This versatile pen is also suitable for use on a variety of other surfaces including glass, CDs, plastic, porcelain, wood and leather. The permanent ink is fast drying to avoid smudging and provides vibrant, high intensity colour. The fine 0.6mm tip is great for neat, legible writing, drawing, diagrams and more. This pack contains 10 blue pens. 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 Weatherproof colour black PP barrel and cap guarantee long service life DRY SAFE - can be left uncapped for days without drying up (Standard atmosphere according to ISO 554) Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft Superb colour brilliancy Line width fine approx. 0.6 mm