Kaweco Ink Cartridges - Paradise Blue
Kaweco makes international standard-sized ink cartridges, so you can use them in almost any fountain pen. There are 10 fab colours to choose from and 6 cartridges per pack.
If you would like to see how Kaweco ink colours look on paper, take a look at this Kaweco inks test: https://quinkandbleach.wordpress.com/2016/05/09/kaweco-inks-test/
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