Bobbins 4 pk
Bobbins: Use only the same type metal or plastic bobbin that came with your machine
Class 15 : For removable and top drop-in bobbin cases. Fits all Singer class 15 models and some of the following machines: Baby Lock, Brother, Riccar, Simplicity and White.
Class 66: Fits all Singer Class 66 models and some of the following machines: Baby Lock, Brother & Simplicity. Bobbins not compatible with the following machines: Bernina, Elna, Husqvarna/Viking, Janome/New Home & Pfaff.