It's an adapter that converts the popular ball socket/mount that is used on goosenecks to a cold shoe mount (¼" 20 screw). I use it to mount Aqara A1 Camera to a Ugreen Gooseneck.  Given the screw is plastic, it's not heavy duty. However, it is able to carry a relatively light weight camera (200 gr). Let me know if there is another mount that you would like this adapter to convert to instead of a cold shoe.

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