NCS Microphone
Here are parts of "NCS Microphone" and its holder.
NCS Microphone is a part of Self-Build Microphone Project Series "Spear Microphone Project".
See details (including sample sound file and instruction) at the project's website.
NCS_Microphone_Project
https://github.com/yosukesakai/NCS_Microphone_Project
The file "xxx tube_bottom_cablestopper.stl" includes all parts needed for assemble.
Other files are optional for further fun.