Designed to fit in either the OEM Bambu spool, or my Honeycomb/Voronoi spools. This adaptor allows easy respooling by providing a secure anchor point for the filament while locking into the spool tab. The filament can be pulled out from the adaptor by the AMS without problems caused by a hook in the filament.
When first printed, use a piece of filament and push it into all the holes to confirm all are open.