Currently at its 3rd generation, the model is now support-free, for all the assembly. Weight is about 28.85 grams of plastic.
Assembly is incredibly easy and showed in picture 3, the base has a screw top, on which you should first insert the ring display and then screw the cap. That's it!
I tested this holder with BambuLab Silk PLA, a generic PETG and a generic PLA. All of them came out functional and stable.
Let me know if you like it!