This press-fit adapter is compatible with Hatchbox and Creality filament spools. It adapts the spool's original 2.16in (55mm) diameter to a 1in (25.4mm) diameter. I have found that these help to reduce spool rolling resistance in my filament dry box.

You can print these in PLA at a 0.2mm layer height without supports. The adapter also does not require any additional hardware. Just clip them on and you're good to go!