Up for sale is a genuine Cannondale OPI SpideRing (8-arm) in the versatile 52/36 (Semi-Compact) ratio.
This is the high-end, one-piece 3D-forged aluminum chainring set (Mark V), known for being incredibly stiff and lightweight (~204g on my scale)

The chainring is structurally perfect and has never been crashed. here is normal cosmetic wear to the black anodization on the teeth (see close-up photos). However, the tooth profile remains healthy and trapezoidal. There are no "shark fins" or hooked teeth—this ring has plenty of life left for thousands of kilometers.

Comes in the original Cannonda...