I was able to make an emergency fix on a clutch cable that had pulled out of the upper button, using one of these. The cable goes through the hole and the screw tightens down on it. In this particular one the screw forces the cable into a U-shape before it clamps down on it, holding it pretty tight. I was able to get one at a moped shop that was near where I was. A bicycle shop might have one too. They come in various sizes. It was good enough to consider it a permanent solution, but I got a new cable as soon as I could.