Flexible clips that lock a bobbin to its matching thread spool to prevent tangles and colour mix‑ups. Compatible with most plastic or metal bobbins and common spool types, they keep storage tidy and speed up project setup. A simple way to organize multiple shades for quilting or garment construction. Built for everyday sewing tasks, it balances durability with ease of use so hobbyists and professionals can work efficiently. Thoughtful sizing and finish options integrate well with common.