This Edding 1455 Calligraphy Marker Pens featuring a 1-5mm flexible tip.This Calligraphy Marker Pen is ideal for people who want beautiful writing craft of calligraphy projects.They are also perfect for writing cards, invitations, certificates or place cards. The Edding Calligraphy Marker Pens are great for general arts and crafts activities at home or school. . Adapts perfectly to rough surfaces such as terracotta, wood, cardboard or canvas producing a particularly even finish.. Lightfast and weatherproof.. Store horizontally.