Looking to make a Male to Female M2 coector Flex cable extension adapter

I'm looking to make a flex cable for the M.2 coector as mostly used for SSD's. Mainly the 2240 size. There would be a male m2 side coecting to a female m2 side. I'm working on project that requires an extension of this slot where I can plug in NVMe SSD's exteally from outside of a case. I think I would have to have this flex cable manufactured, but I'm not clear at all on how to go about doing this. What are the keywords I would need to search for and what do I need to submit to the manufacturer in order for them to make it?

I really just need a long m2 cable as I can do micro-soldering to an extracted m.2 slots from other card adapters. I just know don't how to go about getting this printed circuit flex cable made. And how much do these things usually cost to make? It's a relatively simple cable I think.