My first thought was Mavic when I saw them in the ad but I haven't found any Mavics that match. The center flat on the rim is narrower than my other RhynoLites although the inner rim looks very similar. The rim's outer profile matches the Weinmann ZAC 19's I had just put on the bike I bought these for but the inner profile is quite different. Whatever they are I'm pretty happy with them. Here's the bike with them installed.