Filament Spool holder for aluminium profiles

Wanted a small design for my Filament spool holder. With this one i can adjust the width between the bearings for the different spools there is out there.

The spool is hanging on the design, seems to work great!

Items:
3x M4 x 60mm
1x M4 x 30mm
6x M4 Nut
4x M4 Washer
4x 624ZZ