If any of you guys must have this tool it's made by Beru and the part number is: ZMH 001
Couldn't find a north american source so this is a european one:
https://www.sausewind-shop.com/beru-...001-12-14-18mm
or this:
https://www.louis.eu/en/spark-plug-i...umber=10003450
Honestly just using a swivel socket is fine.