This is used to attach the roll of filament to your support. It will make the roll spinning thanks to the 608RS bearings.

To be a complete set u will need to print 2 pcs of the stl file attached.I printed it at a 0.1 layer. After you printed it add the following hardware: > 2 pcs 608RS bearing > 4 pcs M3*8 Screw > 4 pcs M3 nut > 1 pcs 8mm threaded rod - 130mm length > 6 pcs M8 nut > 6 pcs M8 washers