I got a pair for free so I figured I would give them a try. My intial thought is mixed. They clamp tight, are light, and look nice. BUT they wear away at dropouts bad! When tightening I can see metal/carbon shavings coming off! And tightening, it says 15nm, is it possible to "feel" 15nm and get close? The plastic construction is not confidence inspiring either. The thing I like the least is the wear to the dropouts though.