Mandatory, beautiful, but... I put 4 stars to attract attention to the need to place a compound like Thread Lock on the hub surface, as well as the 3 screws. It is probably mentioned somewhere, but this design has an absolute stop point (which it must to work through the spokes and preserve concentricity), and is milled precisely, but China-made hubs may vary in dimension, so the assembly could appear tight, but prematurely loosed and break spokes as mine did. Mated with the beautiful sprocket, this was the first step in my bike's transformation from 'cute' to professional and beautiful. I also have other billet parts from BikeBerry that complement the overall function and appearance.