Sakura Pigma Micron drawing pen. The first disposable technical pen to use archival pigment ink, the Micron range is by favoured artists, writers and illustrators everywhere. PIGMA© ink has become the defining standard for reliable, permanent, archival quality ink. Archival quality ink is acid-free, chemically stable, waterproof, and fade resistant. No smears, feathers, or bleed-through on most papers. Strong plastic tip is steel clad for strength and for use against rulers and drawing instruments. Set of 9 assorted colours contains one each of orange, sepia, red, rose, purple, green, blue, black and brown. 05 tip gives a 0.45mm line width. Ideal for sketching and drawing or blending with water to use as water colours.