Features: 1.This clip is made of soft silicone, sturdy, durable and reusable, organizing threads and keeping them tidy. 2.The bobbin clip can be used for most sewing and embroidery spools, except for large commercial or oversized spools. 3.This bobbin fixing clip can save the time of finding a small notch on the bobbin to catch the thread, which is convenient and easy to use. 4.The silicone bobbin clamp prevents the bobbin thread from unraveling and knotting, and ensures that the bobbin is neatly stored and organized. 5.Although this clip is small but powerful, it can improve your cleanliness in the sewing room. specification:Item Type: Bobbin Fixing Clip : Four colors yellow, red, blue and green, each color has 10 PackageList:40 xBobbin Fixing Clip (10 each for yellow, red, blue and green)