Hi, @ausragaudi:
Yes, it is! You can add more columns to your documents with Premium Templates. This extension includes a customizer that allows you to tailor your PDF documents using product columns and total rows blocks, as well as custom blocks that you can place in different areas of the document (currently 20 different ones) and display based on given conditions (order status, payment method, billing or shipping country, etc.).
For your specific case, you can add the columns you need with the customizer, as mentioned above (see the available columns here), and they will be displayed on the PDF invoice, like this:
That said, since WordPress doesn’t allow us to provide support or answering pre-sale questions for paid plugins in this forum, please contact us by email at [email protected], if you have further questions.