TWSBI Fountain Pen Ink - Blue Black (Iron Gall) - 70mL

To use with the Diamond 50 Ink Well (available separately), remove the lid from the ink bottle and recap the bottle with the lid from the Diamond 50 Ink Well. Invert the closed bottle to fill up the dosing cup. Remove the outer cap of the Diamond 50 Ink Well to attach your TWSBI Diamond 580 fountain pen (with nib removed), Diamond Mini or universal converter, for a mess free way of drawing up ink.