Standard Bobbin Case- Size L- No break spring Fits all models that take a standard bobbin case.
Bobbin case without a break spring is best used with cardboard sided bobbins and magnetic bobbins.
Who needs a break? Bobbin cases with a break spring are best used with metal sided bobbins and plastic sided bobbins. The break prevents backlash and recoil when the embroidery machine slows down or stops.