Fairly self explanatory this one - the frames come with tabs welded onto the BB but they also have an extra mounting adapter bolted to those tabs.
I can't work out what is what here and was wondering if anyone can help clarify the situation.
Are the welded tabs ISCG 05 or ISCG old or indeed, are those tabs niether?
Based on the answer to the above, what function does the black bracket that is screwed to those tabs play - is this a converter from ISCG 05 to ISCG old or vice versa?
All very confusing but an answer would really help as I want to make sure I have the right chain device before the frame arrives, which should some time in the next 10 days!
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