Stabilizer should be put on pipe. Next you have to rotate nut (or ring) to make tension between pipe and wall. This means you must have any nut on the pipe or anything the nut can stand on.
WARNING - because of thread, ring and nut were exported to STL as one objects but there are separated parts (left and right). You have to separate them in slicer (every slicer have this option).
It suits standard 19mm pipe.
If it's on the sun, remember to use UV resistant material.
Model on photos was printed with DevilDesign ASA.
The author marked this model as their own original creation.