Help sourcing metal "pole socket" brackets

[Dougal]

Hi all,

I need several more of these brackets for securing wooden rods at a 90 degree angle. Anybody have an idea where to look? Local hardware stores don't have them and there is no part number or manufacturer to be found on the part itself. They may be one-offs, I am not sure, but I would prefer to buy them than have to make them.

It is made of steel and accepts a 3/4" rod with a securing pin. Photo attached.

Thanks for any guidance!

Dougal Walker