Fountain Pen Ink Cartridges – dual ended Ooly/Lamy and intl standard fits

A box of five ink cartridges that will fit multiple pens! Long international standard size, with double the ink, and cleverly double ended:

Narrow end: international standard fit
Wide end: Ooly / Lamy fit

We searched far & wide to find Ooly-fit cartridges available in the UK – and when we did, we ordered all the colours!