Sewing Bobbins Size:sewing bobbin diameter 20mm/0.79inch, height 11mm/0.43inch, center hole diameter 6mm/0.24inch. If your original bobbin hole diameter is 6mm/0.24inch. Then our product is suitable for your machine. Box Size 118*97*24mm/4.6*3.8*0.94inch. Sewing Machine Bobbins Application scene: high-quality general sewing machine bobbin, very suitable for sewing factories, household sewing machines, sewing thread collection and induction, DIY and other projects.Compatible with all common household sewing machines. Sewing Machine Bobbin Material: High-quality high-strength plastic sewing bobbins have a longer service life and can be reused, and the transparent color sewing bobbins will not affect the true color of the sewing thread. Package Included: Contains 25 sewing machine bobbins, 1 transparent storage box for storage sewing machine bobbins. Sewing machine bobbin specification: Quantity: 25 pieces Material: high strength plastic Color: transparent Height: 11mm/0.43inch Inner Diameter: 6mm/0.24inch Outer Diameter: 20mm/0.79inch Contents of the package 25pcs Sewing Machine Transparent Spool 1 clear plastic bobbin case Storage box size: 118 x 97 x 24mm/4.6*3.8*0.94inch.