Bungubox 4B Blue Black Fountain Pen Ink (50ml Bottle)
The 50ml bottle of Bungubox 4B Blue Black fountain pen ink is made by Sailor for Bungubox pen store in Japan. This blue-black ink is smooth-flowing and specifically formulated to be safe for all fountain pens. The 50ml glass bottle features an internal removable ink reservoir that makes it possible to fill your pen even when the ink runs low. Cap the bottle, turn it upside down, and then turn it right-side up. The holes on the sides of the reservoir allow ink to flow into the reservoir into which a fountain pen nib can be submerged.
Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side.