Hi. I am offering a dual-sided power meter. It is new, in its packaging, very accurate, and most importantly, it provides measurements for both the left and right sides.
To avoid any misunderstandings regarding compatibility with your crankset, please read the description.
I also have ultralight carbon cranksets, e.g., 580g, 165-175mm, chainrings 50/34, 52/39, 48/35, etc. Message me if needed.