1Made of soft silicone, durable and reusable, used to organize threads and keep them tidy. 2Easy to use, just stretch the spool saver and hug the spool within a second, the spool does not need to be completely covered. 3Saves time to find small gaps on the bobbin to catch the thread, ideal for clamping on or removing from the spool. 4Can be used for most sewing and embroidery spools (except large commercial or oversized spools). 5Helpful to prevent the thread from separating, can prevent the bobbin thread from unraveling and knotting. Item Type: Bobbin BuddiesMaterial: Silicone+PlasticApplication: Suitable for sewing machine spool retainer .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 100 xBobbin Holder