Bowens Wall Mount

(It seems there are problems generating images from stl files on Thingiverse at the moment, so I added a screenshot from FreeCAD)

I needed to get some softboxes off the floor but didn't want to pack them all down, so I had to make a wall mount.

This is my first 3D design ever, so if you have any suggestions for improving it, I'd be happy to hear from you.

I have printed two of them yet, using 40 % infill, and they seem to be stable enough for my softboxes (one octobox ø 80 cm, and one 8