Item Type: Bobbin Holder Clips Function: Suitable for sewing machine, spool storage device Specification: 100Pcs (random color) 50 x Silicone Bobbin Ring 25 x Plastic Bobbin Clip 25 x Bobbin Collection Clip Material: Silicone + Plastic Package List 50 x Silicone Bobbin Ring 25 x Plastic Bobbin Clip 25 x Bobbin Collection Clip 1The product is made of soft silicone and plastic, which is durable and reusable. 2Used to organize threads and keep them tidy, can be used for most sewing and embroidery spools. 3Saves time to find small gaps on the bobbin to catch the thread, which can improve efficiency. 4Very 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. 5Prevent the bobbin thread from unraveling and knotting and make sure that the bobbin is neatly stored and organized.