You may have recently seen my video on the TWSBI Diamond 50, and I wanted to follow that up with a video on the recently released Vac-20 inkwell. It’s different than the Diamond 50, and I cover how in the video.

TWSBI Vac-20 inkwells, available in blue, orange, black, red, and green.

The Vac-20 is a bottle that’s specifically designed to fit the TWSBI Vac-700, and nothing else (at least from the adapter). It fits onto the grip section of the pen and allows you to fill it to the max without getting ink all over the pen like you would get if filling from a normal open bottle. It’s a pretty cool little bottle, and greatly enhances the utility of what’s already a pretty cool pen. Of course, you can always remove that cap and fill it like a normal bottle, with any pen.


It looks nice, but isn’t incredibly fancy. It’s all plastic, and smaller than the Diamond 50. If you’ve seen the packaging of the TWSBI Diamond 50, you know how overzealous that is. This one is much smaller and simpler, about 1/4 of the size of the Diamond 50.




Another cool thing about the Vac-20 is that the cap is swappable with the Diamond 50 bottle, so if you already have one of those, you can use the nicer glass base of the Diamond 50 with the same filling capability of the Vac-20. It’s definitely not necessary, but it is nice that TWSBI considered that in their design.

For $12.99, it’s a pretty handy bottle if you already have a Vac-700. What do you think?