Selection of the most popular black Pigma Micron pens. Pigma was the first ink in the world to combine pigments and water. The selection of fine tips makes this pen ideal for creating both technical and artistic drawings. Unique Pigma ink is permanent, colour, water, and light-fast. Writes on virtually any porous surface, extremely suitable for use on tracing paper. The ink will not bleed through the paper. Practical hanging display. Pigma ink is suitable for filing purposes; and has good archival qualities