Specifically, an RP SMA female to RP SMA female.
I can lots of connectors with RP SMA female on one end, but not at both ends. I know it exists as I have one in my hand but one of our ham-fisted technicians has managed to snap it.
It's for connecting what looks like a WiFi antenna to one of our workshop lifts. I went in to Maplin and spoke to one of the guys there who looked at it and declared it "unusual" and he had nothing in stock.
I can't find anything on the RS Components website but they don't have one. I can't even find an image of one on Google Images.
It looks like this: