Sewing Machine Bobbin Material: High-quality high-strength plastic sewing bobbins have a longer service life and can be reused, and transparent color sewing bobbins not affect the of the sewing thread. Bobbins for Sewing Machine Application scene: high-quality general sewing machine bobbin, very suitable for sewing factories, household sewing machines, sewing thread collection and induction, DIY and other uses. other projects.Compatible with all common domestic sewing machines. Package Included: Contains sewing machine bobbins, 1 transparent storage box for perfect storage of sewing machine bobbins.