Platinum Fountain Pen, Preppy, Fine Nib, Blue Black (PPQ-200-#3) + Ink Cartridges SPN-100A#3(Blue Black) Set (Japan Import) Ink Cartridges: 2 cartridges 2 Packs/total 4 cartridges Water-based ink It is an authentic fountain pen of the cartridge-type which attached the alloy to the nib. The alloy of a nib reduces friction with paper and realizes a smooth feel of writing. Ink Color : Blue Black