Get every last drop out of the bottom of your ink bottle or sample with this TWSBI Pipe extension. It attaches onto the end of your fountain pen converter for ease of filling.
The TWSBI Pipe fits most standard international converter openings, and directly onto all TWSBI Diamond series (i.e. 580 and Mini) fountain pen barrels. You may need to give it a good push to fit.
It can also fit the proprietary TWSBI Spring-Loaded converter and TWSBI Piston converter that are used for the SWIPE.
The TWSBI Pipe comes with protective orange covers on both ends; simply remove and discard these before using.
Pens and converters featured in these pictures are not included.