The SINGER Bobbin Storage Box stores your bobbins in a sleek clear plastic box specifically designed to give you fast and easy access. The transparent bobbin holder makes it easy to find the right bobbin in a specific color thread and the curved bobbin storage rows and hinged lid help keep bobbins in place. This flat compact storage box makes storage in a sewing kit or desk easy. The thread storage box holds up to 25 bobbins. Bobbins are not included.