I created this by SketchUp and printed with my da vinci Duo 2.0 printer. I made this to hang my headphones in this office. The width is 7.9 cm based on the cubic wall in my office. If it fits to your office, welcome to use it.
I used 30% infill, 0.2mm layer, no raft, and support. I turned 270 degree in Z axis while printing it.