1 Each. Special permanent markers deliver excellent smudgeproof, waterproof quality on many surfaces that other fine markers do not work on, including coated surfaces, nano coatings, optical glass and laboratory glass. Can also be used for marking laundry and many outdoor applications. Color intense, low-odor ink dries in seconds and is lightfast for up to seven years. Markers are ideal for left-handers as well as right-handers. Feature polypropylene caps and barrels and include clips.