Spoolee (An adjustable filament spool holder)

I was repairing the broken wheels of my sliding windows when i realized that these wheels actually make pretty good filament spool holders! So i have made a frame to which four of such sliding door wheels can fit on.

In addition, i would like it to be compatible with a variety of spool sizes and hence i have also made it fully adjustable by width and length.

If you have 4 spare sliding window wheels lying around that measures 14.5mm width, this might work for you!