Ka-Ku Fountain Pen Ink - Aquarium Hidden in the Stars NOTEBOOKS FOR MONOGRAMMING Includes a black ink cartridge

Includes a black ink cartridge

Paper refills available here: Grid

7mm ballpoint pen

Body made of aluminum

Ka-Ku Fountain Pen Ink - Aquarium Hidden in the Stars NOTEBOOKS FOR MONOGRAMMING Includes a black ink cartridgeKa ku, which is Japanese for write, is a Japanese retailer and brand that hopes to make customers daily lives more fun through their curation of writing instruments and inks. In 2023, Ka ku began developing original fountain pen inks including inks that can be mixed together for endless ways to play. 18ml bottled fountain pen ink Suitable for writing with fountain pens, dip pens, glass pens, and other ink pens.