A box of 12 black permanent markers made to write on any surface from cardboard and plastic to metal and CDs Choose any thickness between 3.7 mm and 5.5 mm with the ultra-durable chiselled tip Optimised technology for low odour ink and the colour won’t fade - dries quickly on all surfaces These long-lasting permanent markers can write for over 1 km and won’t dry out for a month if the cap is left off Earth-friendly BIC Marking 2300 ECOlutions permanent markers are made of 51% recycled materials (not including the ink system)