This parts helps to attach a balkon power supply intended for a flat wall (like priwatt or flexenergy) to a rounded balkon rail.Only stl is the file to print. All others shows how to attach it. The clamp is a usal DIY product but i put a hole in it and reduced the head of the screw so they can be put inside the upper part of the clamp but not turn. And i reduced the bar of the clamp on one side to better fit to the printed part. Of course this clamps can be printed as well. I used PET.