1、Made of high‑quality environmentally friendly plastic, strong and durable, not easy to break, has a long service life 2、There are two floss clips on each cards to hold the end of the floss. you can also mark these floss clips with a marker for easy reference 3、The manual winding machine and floss cards holding rings and other tools help improve the efficiency of sewing operations 4、This set of thread cards can help you organize and untie the remaining thread, easily store the needle crafts, prevent them from entanglement, and easily and conveniently classify 5、Help you save threads, twisted threads, paper tape, so that you can use conveniently when various threads are confused Item Type: Plastic Floss Bobbin SetFunction: Used to assist cross-stitch sewing operations