Fits into Lamy fountain pens the same way the cartridges do, they act as a refillable ink reservoir to be used with bottled ink that is intended for fountain pen use. The converter features a twist-action piston for easy use.
It's a great way to reduce your waste by switching from disposable cartridges!
Z27 proprietary converter for Lamy fountain pens
Intended to be used with the following Lamy fountain pens: