Purchased a thread adapter online that claimed to be
3/8"-24 male to M10x1.0 female. Couldn't find it anywhere else so I took a gamble.
It had mandatory express shipping so it costed me another $13.
Turns it it did not fit either my 3/8"-24 brake master cylinder outlet OR my M10x1.0 T fitting.
I had already scratched it up trying to fit it on so I didn't expect a refund but I emailed them and didn't get a response in a week.