Sewing Bobbins Size: Single sewing bobbin diameter 20mm, height 10mm, center hole diameter 6mm. If your original bobbin hole diameter is 65mm. Then our product is suitable for your machine.Box Size 10*12*2.7cm. Sewing Machine Bobbins Application scene: general high-grade sewing machine bobbin, very suitable for factories sewing machines, household sewing machines, sewing thread collection and induction, crafts and other projects. Compatible with all common household sewing machines. Bobbin Material Machine a Sewing: High-quality, high-strength plastic sewing spools have a longer service life and can be reused, and the transparent color sewing spools will not affect the true color of the sewing thread. < p>Package Included: contains 25 sewing machine bobbins, 1 transparent storage box for perfect storage of sewing machine bobbins.