Zefal Spin Road Bike Mirror (Black)

I liked the idea of this one so much - a compact mirror that mounted in the end of the handlebars - that I bought two of them. However, both facets of the design caused trouble. The end-of-handlebar mount proved to be insecure, and the small mirror is simply too hard to adjust for a usable sight picture. I don't know if a better design would tighten the mount properly into the handlebar, but I think I'm going for an around-the-handlebar mount next time. There's no fixing a mirror that's simply too small, so next time I'm going to seek out a larger mirror like something you'd see on a motorcycle.