Guaranteed to fit Brother sewing machine models:
LS2-F52A

Guaranteed to fit Consew sewing machine models:
206RB-5, 206RBL-18, 206RBL-25, 744R20, 744R30, 745R20, 745R30

Guaranteed to fit Seiko sewing machine models:
JW-228BL-20-2, JW-28BL-30-2, JW-28BL-30-3, JW-28BLA-20-2, JW-28BLA-30-2, JW-8BL-20-2, JW-8BL-30-2, JW-8BL-30-3, JW-8BLA-20-2, JW-8BLA-30-2, JW-8BLA-30-3