Spool Adapter for Inland Spooless refill for the Bambu Reusable Spool.

The Inland refill spools have a larger diameter but are not as wide as the Bambu spools. This adapter fills in those spots so that its an easy change over and you don't have to worry about messing up the spool to make it work.

I just keep the adapter on the spool and refill it when it runs out.