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@dan
As per title. I have a Rotor 49t chainring and a SRAM Omnium 48t chainring - both black. Minimal track-only use for both; spent most of their life in one of those chainring organiser bags.
I'm after a swap for Dura ace, Sugino 75/zen rings - in the same sizes. Black would be nice, but not essential.
Will also buy if anyone has either size but doesn't want a swap