COPIC markers are fast-drying, double-ended and available in 322 colors. These exceptional markers are reliable, permanent, non-toxic, and dry acid-free. They have replaceable nibs, with a variety of optional nibs, and are toner compatible. Their outstanding performance and versatility have made COPIC markers the choice of professional designers worldwide. COPIC markers are ideal for all your calligraphy, airbrushing, and graphic arts needs. The broad nib offers smooth, consistent coverage for larger areas, while the fine nib allows for easy detail work.