This is an original pair of late 1960's Buick Aluminum 90 Fin Front Brake Drums/Hubs.  Pretty decent condition, but do have some normal wear, some lite surface rust in areas and some lite pitting in areas-see photos.  One has some cracks starting at the lug bolts-see photos.  Brake area measures approx 12 1/16" and 12 3/16" in diameter-see photos.  5 on 5" bolt pattern.  Not sure of exact years or models these are correct for.   Often used for custom projects.  Please check my other auctions.