Guaranteed to fit Babylock sewing machine models:
Ellegante 2 BLG2, Ellegante 2 Signature BLG2-NZ, Ellegante 3 BLG3, Ellegante BLG

Guaranteed to fit Brother sewing machine models:
4500D Duetta, 4750D Duetta 2 (NV4750D), Innov-is 4000D (NV4000D), Innov-is 4000 (NV4000)