Detailled description
Visible ink level, so you will never run out of ink. Ink regulator for a perfect ink flow. Fluent liquid ink, intense and shiny. Unfalsifiable for the colors black and blue. Unalterable and wear-free tangsten carbide ball. Fine conical point 0,5 mm, line 0,4 mm. Cap with metallic clip. Sleeve of 4 classic assorted colors: black, blue, red, green.