STAEDTLER box containing 4 assorted colours, line width F\n\n- For write-on films and other film surfaces such as sheet covers, laminates and school whiteboards\n- Ideal for Lumocolor year planner 641 YP and Lumocolor memo board 641 MB\n- Can be dry-wiped from many smooth surfaces\n- Suitable for overhead projection\n- Water-soluble ink\n- Colour-intensive, low-odour\n- Lightfast\n- Does not bleed through paper\n- Wiper integrated in end plug; cap with roll stop\n- Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft\n- PP barrel and cap guarantee long service life\n- Line width F - fine (approx. 0.6 mm)\n- Line width M - medium (approx. 1.0 mm)\n- Refillable with refill station 487 05