COPIC Sketch is the ultimate flexible graphic marker. Its double ended iconic design features a flexible brush nib as well as a medium broad nib great for expressive strokes, building up tone, blending colors, shading, finer details and lines, and large streak free coverage. They are made with the highest grade of expertly formulated alcohol and dye-based inks.Details: Includes assorted colors 72 markers Double ended Replaceable tip Acid-free Permanent Non-toxic