https://www.mjtrim.com/4-class-66-bobbins-32175321754 Class 66 Bobbinshttps://www.mjtrim.com/media/catalog/product/6/1/61534.jpg3.9800USDInStock/SUPPLIES/Tools & Color Cards <p style="text-align: justify;">This is a metal 4 Class 66 Bobbins pack and works for top drop-in bobbin cases. Please consult to your sewing machine's manual to determine the type and size of bobbin needed for your machine. These specific metal bobbins is compatible for the following machines: Singer, Baby Lock, Brother, and Simplicity.</p>3.9800add-to-cart