Filament Spool Holder

So i wanted to make a nice rack above my printers to hang my spools on, ended up with this design.

Here is the rack itself (https://www.thingiverse.com/thing:3583884)

The spool holders can move freely and turn 360 degrees, this makes it easier for the 3D printer to unwind the filament.

I have only made one spool adapter with an diameter by 52 mm.
If requested i can make different sizes.
The max width of a filament spool is 78 mm and 230 mm in diameter.

The rods i'm hanging the hooks on are 16 mm diameter.