1、The product is made of soft silicone and plastic, which is durable and reusable. 2、Used to organize threads and keep them tidy, can be used for most sewing and embroidery spools. 3、Saves time to find small gaps on the bobbin to catch the thread, which can improve efficiency. 4、Very suitable for clamping on or removing the bobbin thread, the bobbin thread organizer is very helpful to prevent the bobbin thread from separating when the bobbin thread is not used. 5、Prevent the bobbin thread from unraveling and knotting and make sure that the bobbin is neatly stored and organized. 50 x Silicone Bobbin Ring25 x Plastic Bobbin Clip25 x Bobbin Collection Clip Item Type: Bobbin Holder ClipsFunction: Suitable for sewing machine, spool storage deviceSpecification: 100Pcs (random color)50 x Silicone Bobbin Ring25 x Plastic Bobbin Clip25 x Bobbin Collection ClipMaterial: Silicone + Plastic