Found some more I forgot about. Used on my property by previous owners as edging and it just slowly sank into the ground. Very annoying. Thought I would have use for it, but years later, no.
I think it has rebar in it. About 3 inches by 3 inches. Longer pieces are like 4 or 5 feet plus.
Douglas street, Mount Vernon, closer to Christian School side, West side of street. Contact for address, and if you don't sound sketchy, I'll tell you the address.