This clip is designed specifically to securely hold the Bambu Lab filament on the spool when not in use, taking advantage of the raised ridge band around the inner side of the spool. It has a low profile, a minimalist design look, and is simple to use: snap it on the spool and clip on the filament.

It's designed to have a snug fit to prevent the clip or the filament from getting off, a problem for some other clips. When putting in on or taking it off, it can be easier to start from the side that's on the inner side of the spool (this is because the raised ridge band around the Bambu Lab spool is on the inner side).

Disclaimer: The word “Bambu” on the clip is for labeling purpose, to indicate the clip is for Bambu Lab spools. It does not indicate or imply that this clip design is endorsed by Bambu Lab or any company named Bambu.