• Staedtler Lumocolor Permanent Universal Blue Fine Line Pen for use on overhead projector film and almost all surfaces. • Produces a fine line 0.6mm width. • Dry Safe ink so pen can be left uncapped for days without drying up. • Has high smudge-proof and waterproof qualities on almost all surfaces. The ink of the Staedtler Lumocolor Permanent Universal Blue Fine Line Pen features high smudge-proof and waterproof qualities on almost all surfaces. It is for use on overhead projector film and almost all surfaces including CDs and DVDs. The Dry Safe ink means that the pen can be left uncapped for days without drying up. The ink is also fast drying which means the pen is ideal for left-handed users. A polypropylene barrel and cap ensures a long service life for the pen. The pen is airplane-safe and the automatic pressure equalisation prevents the ink from leaking on board an aircraft. Fine line width is approximately 0.6mm. Additional details: Packaging size: 140mm x 15mm x 12mm