No Tangle Thread Bobbins 1 7/8 Inch- Bag of 8

Type of Material: POLYOLEFIN ELASTOMER.
Allows bead stores to spool down & repackage large spools of thread into smaller retail-friendly put-ups. Has a patented, protective locking feature which prevents threads from unraveling. Stackable and made from soft plastic. Bob-EEZ are also great for macramé! Use multiple bobbins to secure loose ends as you work."