Yes there is a catch; my son and my cycling buddy both had a a set and at first they loved the light weight and the stiffness. However, as they say, you can have light, cheap and strong but not all three at once and these wheels are light and cheap but not very strong. We had two rims dented in relatively minor accidents and the bearings didn’t really do very well in real world conditions. The rebuild service was efficient though. Both sets got retired within about 12 months and our rebuilt wheels are now on my wife’s bike; she’s petite and doesn’t ride much so they’ll be fine for her.