Singer sewing machine 6 pack lot 2 of genuine first generation class 66 one hole bobbins. Lot 2

This 6-pack of genuine first generation Class 66 one-hole bobbins lot 2 is specifically designed for use with Singer sewing machines such as models 66, 99, and 201. Each bobbin ensures consistent thread tension and stitch quality, while the included protective zipper bag helps maintain organization and storage safety.