50 x Fountain Pen Black Ink Cartridges, Standard 2.6mm Size, Compatible with Many Brands

• These 50 ink cartridges are compatible with most fountain pens with a bore size of 2.6mm, please note ink cartridges are not filled to the top to allow airflow, however each cartridge contains 0.9ml of black ink.
• High-quality ink - Permanent ink that flows smoothly onto the paper
• This cartridge will fit all good quality fountain pens that accept international standard sized refill cartridges
• Compatible with most of fountain pens take 2.6mm standard cartridges

These replacement ink cartridges are compatible with most fountain pens that use standard international 2.6mm cartridges. Sleek and slender, these cartridges will keep your fountain pen writing smoothly for pages. At a reasonable price per cartridge, you can keep your pens inked without breaking the bank.