FOR BERNINA FOR OLDER MODELS LIKE. 530, 530-534, 534, 534-540, 700, 701, 707, 708, 709, 710, 717-729, 730-732, 801, 801S, 802S and 803S. 830 FOR OLDER MODELS. THESE ARE NOT FOR SEMI-INDUSTRIAL MODELS 840, 850 OR 940, 950 AND WILL NOT FIT THESE MODELS.