Lumocolor® non-permanent pen 316 - Box of 4This wallet contains one of each: red, blue, green and blackLine Width: 0.4mmAbout the Lumocolor® non-permanent pen 316:- Universal pen for use on almost all surfaces- Suitable for overhead projection- Can be wiped off film using a damp cloth- Water-soluble ink- Fast-drying- PP barrel and cap guarantee long service life- Airplane safe - automatic pressure equalisation prevents pen from leaking on board aircfraft- Superb colour brilliancyCode: 311WP4