TWSBI Vac 20A Ink Bottle - Green

Works really well, with one small annoyance

The Vac 20A Inkwell works extremely well with my TWSBI Vac 700r - the pen screws in securely with no ink leakage when upended for filling. It fills it very cleanly, leaving no ink on on the pen except for the nib and feed. My only small complaint is that the design of the lid has a really deep inset so that when you have your pen attached and you turn it upside down to fill, that section holds a bunch of ink below the fill line of the pen, making it impossible to use the last ~3 mL of ink in the well inverted. I had been hoping that this would work well for filling up the Vac 700r - but unfortunately there is just too much dead space for that.

Handy Ink Bottle

I bought several of these bottles because the opening on new Diamine 30ml ink bottles is to small for my lager pens to fill from. The TWSBI is large enough for any pen that I have.