Filament Spool Roller

Filament Spool Roller designed around HatchBox 1kg spools. There are two roller wheel styles to accommodate slightly different spools. The bearing center-center width is 64mm.

BOM:
(1) Base
(4) Roller Wheels
(4) 606-ZZ Radial Ball Bearing 6X17X6 https://goo.gl/zPcvhT
(4) M6x25 Screws
(4) M6 Nut
(8) M6 Washers