TWSBI Fountain Pen Ink – 70ml bottle – Blue-Black

TWSBI fountain pen inks are packaged in a stunning frosted bottle and include an internal reservoir that helps you get every last drop out of the bottle.
 
The bottle is also compatible with the Diamond 50 cap, allowing you to refill your Diamond, Diamond Mini, Precision and Classic pens with ease.
 
Each exquisite ink color is available in an 70 ml frosted glass bottle.