Well, I feel quite ignorant for asking, but . . .
I used a Shimano Dura Ace Cable kit to replace my shifting cable. The kit came with 2 cables, 2 long housings, 1 short housing, five black plastic ferrules, 2 cable end crimps, and 1 silver ferrule like thing.
It is the one silver ferrule like thing that has me somewhat baffled -- what is it, and what is it for? It is shaped like a ferrule, but it appears to sorta step down on one end, so it sorta has a female and male end to it.
I can't seem to find anything like it on any of my existing cable . . . .
sorry, I don't have a pic available.