The original clips of the model were too large for the niceABS 250g spools sold by 3DJake so I made these very simple adapters.

Print the “Adapter for 250g AMOLEN 140mm Spools.stl” and the clips from the original design and six of these adapters.

Once you have mounted the ring and the clips just insert these adapters between the clip and the spool.
I made and tested multiple revisions, but you can scale it in Z direction of the fitment isn't tight enough.