I did a test fit of this onto my 700c hybrid bike and it seems to be spot on for the size. I didn't install it yet, as the previous owner of my hybrid overly enthusiastically stripped the bolt holes on my rear frame end. So I'll need to get some longer low profile allen bolts and some M5 nuts to match in order to install it. Seems like a great product though. TheBikeSmiths had the cheapest price compared to others and since I've successfully bought from them before it was a no-brainer to order it. It shipped quickly too. Thanks!