This is a customizable filament spool hub. It will allow for some error margin in the roll hole size. It's designed to work with or without a bearing. You can customize the filament hole size, bearing diameters and more. Try it in the customizer, edit the .SCAD file, or use the provided STL, which is a version that fits a eSUN 1kg spool (52mm diameter hole) with a standard skate (608) bearing.

Please share your makes :)