MSBD Set of 10 Metal Sewing Machine Bobbins + 2 Bobbin Cases for Toyota, Brother, Janome, Elna, Bernina, Singer Machines What you get: Package includes 2 sewing machine bobbin cases and 10 metal sewing machine bobbins, providing ample supplies for sewing projects Size: Each bobbin case is approximately 21mm in diameter and compatible with most sewing machines, including Babylock, Bernina, Brother, Elna, Janome, Kenmore, Singer, and others Bobbin and case for sewing machine: The metal bobbins are durable and designed for long-term use. They help stop spinning quickly, effectively preventing thread from unwinding or tangling during sewing. The case is suitable as a replacement part for sewing machines with a front-loading bobbin system Simple and practical design: The bobbin case features a straightforward, functional design that is easy to install and use