Looks like half a rod to rod clamp.
But G only comes up with surgical things. https://images.app.goo.gl/9Czg12RCuhF55VHaA
I have seen these, thanks.
I found some for the wrong diameter, made in China but no longer available.
I did not think it would be this hard.
@Josh started
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Looks like half a rod to rod clamp.
But G only comes up with surgical things. https://images.app.goo.gl/9Czg12RCuhF55VHaA