7/16" 11.5mm 10pcs. Bobbins

10 Bobbins Included: Ideal for Pre Winding Your Embroidery Bobbin Thread to Have Ready When Needed, and for Keeping Extra Bobbins on Hand for Winding Sewing Thread Colors to Suit Your Projects

High quality, durable construction: premium quality plastic bobbins can be reused many times, with security notch for consistent bobbin thread winding

Clear view bobbins: the clear, transparent plastic allows you to easily see when your bobbin thread is running low