this is a SO-239 breakout box that has a semi circular mount to connect to a ~1.25" tube (mine is connected to my vertical)
Uses two zip ties to secure
use a panel mount SO-239, solder your wires to the back of the mount and feed through the hole. I used silicone to seal the exit hole, the threaded section and around the connector itself.
exit hole is big enough for 2 14AWG THHN wires, i didnt try #12

If using outside use an appropriate filament, I used PETG

It should load in the proper printing orientation, only supports needed might be the zip tie channels