Pelikan 4001 Ink Cartridge Large Blue 5Pcs/Box \tPelikan 4001 inks are part of a number of our products that have proven themselves over many decades. \tThanks to the formula which has been perfected down to the finest detail, the proven quality of the 4001 ink is consistently assured. \tThey guarantee an even flow of ink, powerful written expression and vibrant colour. \tA true jack of all trades. The classical GTP/5 for all Pelikan and many other fountain pens.