This is a shock mount made for LOM Uši microphones.

There is a 3/8-inch thread at the bottom. The microphone holder is tight. This model is designed for a medium-flexible TPU filament. The microphone is simply pushed in, allowing the holder to stretch nicely and hold the microphone tightly.
Hard, non-flexible filaments will not be suitable! Tho.. you can give it a try.. Also, a filament that is too rubbery will not work well because the shock mount will bend too much.

I used cheap filament, so my print doesn't look perfect. It can definitely be printed much cleaner if you take your time.
I hope this helps and saves you some money! :-)

Simply lay it flat, no supports needed, 100% infill, and that's it. Happy recording!