Non-permanent universal pen M\n\n- Universal pen for use on almost all surfaces\n- Suitable for overhead projection\n- Can be wiped off film using a damp cloth\n- Water-soluble ink\n- Fast-drying\n- PP barrel and cap guarantee long service life\n- Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft\n- Stand-up STAEDTLER box\n- Superb colour brilliancy\n- Lightfast colour black\n- Line width medium approx. 1.0 mm\n- Refillable