Guaranteed to fit Pfaff sewing machine models:
1051, 1053, 1114, 1122-G, 1163, 1181, 1181-D, 1183, 1183-D, 1243, 1243-712-02, 1521, 2438, 2481, 2481-901-11, 2481-980-30, 2483, 2483-980-31, 3483-980-33, 3119, 3307-1, 3307-3, 3307-4, 3307-5, 3307-p, 333-712-02, 333-712-03, 3704-2-02, 3704-2-03, 3734-2-01, 3734-2-21, 3811-15-65, 3811-16-65, 3811-3-55, 3834-14-21, 3834-4-11, 3877-16-65, 491, 8303-040, 8303-041, 8303-042, 9083, 918U, 938-U, 938U-SRP, 939U