TWSBI ink bottles are designed specifically to work with TWSBI fountain pens to provide quick, easy and clean filling of your pen.
Although designed primarily to partner the Diamond series of pens (Diamond 580 and Diamond mini), the TWSBI Diamond 50 ink bottle can be used with all makes and models of fountain pen.
Glass ink bottle Internal reservoir Unique filling mode
Plastic bottle For use with Vac 700, Vac 700R & Vac Mini Capacity 20ml
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