This is a holder for my YouLoop magnetic antenna that I use for my Malahit SDR receiver.
The vertical pipe is a standard PVC pipe for electrical installations with an inner diameter of 23 mm and an outer diameter of 25 mm.
Please note: it appears that the "Download All Files" button does not work for these model files. You need to download the individual files. Sadly, Thingiverse does have a problem with this function.