For use on almost all surfaces, suitable for OHP.Also suitable for burning on CDs and DVDs.Excellent smudge and water resistance on almost all surfaces.Dry after a few seconds, so it is also ideal for left-handers.Permanent, essentially odorless ink. DRY SAFE - can be left open for days without drying (ISO 554 test).Free of xylene and toluene. Line width F, thin (about 0.6 mm).