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 SAFEcan 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 STAEDTLER box containing 4 Lumocolor permanent in assorted colours, line width M, approx. 1.0 mm Features Water-resistant Yes Fast drying Yes Refillable Yes Point type Medium Housing material Polypropylene (PP) Product colour Black, Blue, Green, Red Writing colours Black, Blue, Green, Red Packaging content Quantity per pack 4 pc(s) General Product family Lumocolor