Holes are for 5/8” pins.  They may fit other sized Island Packets as well. There was no rust or broken pieces on them.  Pictures show the condition as removed.  I would recommend having them X-rayed to be certain there are no hidden cracks.  Even with this added cost, you will be well under the price of a new set.  These would be a good option for an older boat that has known bad chain plates.  These could be an economical way to give the boat a few more years of life.  Shipping will be a flat fee of $40.00 to US addresses only.  I will gladly answer any questions that you may have.