Guaranteed to fit Pfaff sewing machine models:
1051, 1053, 1181, 9083, 1181-D, 1183-D, 1183-712-02, 1421-E1, 1441, 1471E1, 1491-E1, 1493-E1, 2481,2481-906-11, 2481-980-30, 2483, 2483-980-31, 2483-980-33, 3338, 3339, 3511-2-01, 3519-4-01, 3566-2-02, 3568-1-12, 3568-12-22,3568-12-52, 3568-2-11, 3568-2-12, 3574-2-02, 3586-12-02,3586-13-01, 3586-2-01, 3587-12-01, 3584-2-01, 3701-4-11, 3704-2-02,3704-2-03, 3822-1-22, 3822-1-24, 417, 418, 419, 421E1,38, 461, 463, 463H, 471, 487-G, 483-G, 489, 561, 563, 9083, 917, 917-706, 918, 918U, 937, 937-706, 938-U, 938U-SRP, 939U