70 ml of high-quality, general use fountain pen ink from Pilot specifically targeted for plunger-type fountain pens. Each bottle contains a simple but brilliant solution to the age old problem of how to enjoy every last drop of your fountain pen. Plunger type suction fountain pens usually need a certain level of ink to be able to suck up ink into the pen body. In normal bottles, as you approach depleting ink reservoirs it gets more and more difficult to suck up ink. Each of these ink bottles easily solves that problem with a simple plastic tube in the bottle.
