Quick to print, consider its size.

I created it to fit to rods for diameters from 16 mm to 26 mm.

No supports.

No additional hardware or tools are needed. Only printed parts.

Nut from back fits to all uploaded sizes.

Nut is slim and you need only 15 mm from back to be able to use it. (gap between back of the rod and the wall)

It is tilted 1 deg upwords so when you put stuff on it it stays ~horisontal, not bend downwoards.

Total width is 179,5 mm so it can be printed also on MINI printers.

I printed it with parameters:

Layer high: nut 0,2, shelf 0,24

wall thickness: 1,2

infill 20%

no supports.

Material: Up to your needs. I used PLA, works for me.