The plastic clip is approximately 7 cm long and suitable for almost all spools. Made of quality plastic, lightweight, thick, and not easy to break. Reusable and can serve you for a long time. The package includes 100 bobbin clips, enough to meet your needs. Keep your bobbins and spools together by color, perfect for organizing thread and bobbins, easy to use. They work great for organizing bobbins and keeping the spool with a suitable bobbin, a nice accessory for a tailor, more convenient and time-saving. Description: Clip the thread spool onto the bobbin to prevent it from unraveling, organize the spools and keep them together with the corresponding bobbin. The bobbin thread clip is small and lightweight, convenient and portable. It is a good helper for storing the bobbin when sewing. Match the bobbin and thread. It fits most types of bobbins. Reusable design means you can use them over and over again for years. Great sewing accessory for a tailor or seamstress. Great gift for your wife, girlfriend, mother, and those who love thread organization. Material: Plastic Size: about 7 cm Character Made of high-quality material, fits most thread spools, easy to use and very practical. Perfect for keeping thread and matching bobbin together. Ideal for quilting and for workshops and classes. Good advice: Please allow 1-2 mm error due to manual measurement. The item color shown in photos may look slightly different on your computer screen because monitors are not calibrated the same way.