PeavyTailor bobbin holders are designed to avoid thread twined. These spool clips are organizers that keep your sewing room neat, nice and clean. Hold it until you clamp the thread tail. The bobbin huggers will tighten the thread and will not let it tangle even if you drop it. These thread bobbin holders are made from High-strength plastic which is durable to last for many years. These sewing clamps fit most domestic embroidery and sewing thread spools. 20 pcs of bobbin clamps with 4 colors evenly mixed：Pink, Green, Purple and Sky Blue. Those thread spools clips did a great job to avoid mess of unwinding Thread Tails when they are in storage. We promise the product quality and will punish all piracy. This Bobbin Buddies Great for Embroidery Quilting and Sewing Thread. Suitable for bobbins size A. Simply slip the soft plastic bobbin buddies over spools and insert into thread spool. easy to use and the thread stays put! Tidy up your thread bobbin storage & eliminate the clutter and frustration caused by tangled tails or loose ends – adapt our easy, effective and awesome Thread Savers and stay better organized. Cute little accessories that embrace your spools to prevent unraveling of threads , Easy to put on and equally easy to remove - Come packaged in a set of 20 pcs . - Reusable design that allows you to use these over and again for years – offer great value in the long run.