This is an add to a model from ThingWizard on thingiverse.com. I added the base and fixation screw.
It needs :
a 3/8' (microphone stand size) ruthex insert for the base
a M6 ruthex insert for the fixation,
a M6 bolt with square base (see photo)
Original model to be seen here, I also uploaded the original clip : https://www.thingiverse.com/thing:2292049/files
The author marked this model as their own original creation.