Organize your sewing threads neatly with Dritz Reusable Bobbins. Always consult your sewing manual to determine the proper type of bobbin needed for your machine, and use only the same type (plastic or metal) of bobbin that came with your machine.
The 4 pack contains Class 15 bobbins that are designed to fit in machines such as Singer, Baby Lock, Brother, Riccar, Simplicity and White.
The 12 pack contains Class 66 bobbins designed to fit removable and top drop-in bobbin cases. Fits some of the following machines: Singer Baby Lock Brother and Simplicity.