This is a low profile adaptor to enable the “Adjustable Spool Holder for Silica Gel / Spool Weight” by humebeam to be fitted to larger bore spools such as Sunlu.

The adaptors hold lightly into place and the outer shape greatly assists the fitting and removal of the adjustable spool holder.

The spool holder can be found at: Adjustable Spool Holder for Silica Gel / Spool Weight by humebeam | Download free STL model | Printables.com