Originally Posted by
The Goats
fietsbob - Yes you are quite right. 5700 and 6700 have these same 'ratchet' or 'teeth' on the 12T as Shimano uses the exact same part number on their 12-XX cassettes also, so really not an issue.
Not that I'd expect anything less, but I can confirm this information. I just got a couple of 5700 cassettes tonight -- one 12-27 and one 11-28. Here are the small cogs and lockrings.
Also...
