Filament Roller Holder

Roll Holder that will fit 20 x 20 extrusion..Holders do have a slight adjustments for the spools ..Need the following items:

4 - 5/16 x 1in Bolt
4 - 5/16 Nuts
4 - 6-32 x 3/4 in Screws
2 - 6-32 x 3/8 Screws
6 - 6-32 Nuts