Lumocolor Permanent Duo Marker

Single markers offer two tips. One end has a 0.6 mm tip that is ideal for writing. The other end has a 1.5 mm tip that is perfect for marking. Markers write on virtually all surfaces including overhead projector film. Low-odor, xylene-free, smudge-resistant, water-resistant ink dries in just three to six seconds. Markers can be left uncapped for days without drying up. When you are using one end, a cap fits securely on the other end. Markers can be refilled in minutes for continued use or totally refilled in three to four hours in an optional refill station, which is sold separately. Black ink is highly lightfast, with writing staying clearly legible years later.