chainring optons for caad12

Just check the BCD (bolt circle diameter) of the crank spider (it will either be printed on the rings or just measure the radius from crank centre to bolt hole centre and double it, or across two bolt holes and use the table in this guide - https://www.wolftoothcomponents.com/pages/how-to-measure-bolt-circle-diameter-bcd) and then any five bolt chainrings of the same BCD will fit.

It does depend whether you have a 110BCD or not though - you can’t fit compact chainrings on a 130BCD crank spider as it’s impossible to make rings that small with bolt holes that far apart. I would suspect you have 110BCD though.

If you want to stick with FSA, once you have the BCD you can just search their website (or any dealer’s) and look for the same model of chainring (you should be able to identify which model it is comparing pictures online to your current chainrings).

You aren’t limited to FSA though, there will be many brands that will fit, some will look in keeping, others not (such as Shimano chainrings which are shaped to fit their specific crankarm shapes). Other brands to consider are Praxis, TA, Absolute Black, etc etc. Avoid Campagnolo though as they won’t fit.