A quick filament clip I made to store my filament safer, since there's always that chance of filament snapping when guided through the spool holes and then it's a mess. The clip can be used both ways; with the filament on the inside (as seen in the pictures and probably the smartest) or on the outside, just pick your favorite. It clicks into place in the holes on the side of the Bambu Lab spools. Just slide to the side to get the clip off easily.