I got these when I got new bars that had a slightly smaller inside diameter. My old Vision levers just didn't quite fit. These levers are just slightly smaller diameter on the expansion plug, so they fit fine. And they would still expand enough for other bars.
I also like the return spring. The levers snap back quickly and sharply.
Another cool feature, though I haven't used it, is you're supposed to be able to adjust how far out the levers go. I have gorilla hands already, so I don't have the need to adjust them inward.
(Posted on 29/06/2011)