Ka-Ku Fountain Pen Ink - Karashi-iro HOBONICHI The black nylon material gives

The black nylon material gives the cover a broad appeal that anyone can appreciate

Pilot co-founders Ryosuke Namiki and Masao Wada established the company in 1918 with the trademark

Fits Field Notes or any A6 Slim Soft Cover Notebooks

Blackwing Replacement Eraser also available

Ka-Ku Fountain Pen Ink - Karashi-iro HOBONICHI The black nylon material givesKa 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.