mavic open 20

[guitarbiker]

I just bought some used wheels fairly cheap.....under $200. They were advertised as Mavic Open Pro rim with Shimano Ultegra hubs. When I got them home I noticed they rims said Mavic Open 20. I've tried to find information on them on the web, but can't seem to find anything....I'm wondering if they're anywhere near an Open Pro or if anyone has any info on these rims. They seem to work alright but I'm just wondering where they sit in the Mavic line.

Thanks