Continued: Six Months of Hardship…

 

 
Does a part like the one in this photo actually exist??
Ball section: plastic, preferably black
Ball diameter: around 25φ
Threaded section: inch size, 3/8 or 1/4 (the inch size used in camera standards)
Something like that.
I bought a red ball at the hardware store earlier, but it’s too big…

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