Calligraphy markers have a dual tip featuring a narrow tip (2.0mm) and broad (5.0mm) for making beautiful letters and borders. ZIGŪ Memory SystemŪ is continually named the best marker among scrapbookers and crafters, this is the premier line of markers designed specifically for scrapbooking. Pigment ink that has been tested for archival quality. All are acid-free, lightfast, colorfast, waterproof, fade-proof, non-bleeding and smear-proof, once dry.