JZK 25 pcs plastic sewing machine bobbins spools with storage box, transparent Fit for all standard household sewing machines Brother, Singer, Bernina, Pfaff, Elna, Babylock, Kenmore, Juki, etc. Each bobbin size : diameter: 2 cm, height: 11.5 mm, center hole diameter: 6 mm, ★★ If the diameter of your original bobbin hole is 6 mm. Then our products will be suitable for your machine. Durable and practical, helpful tools for home use. This item is a set of 25 empty sewing machine bobbins in storage box, does not included thread.