Guaranteed to fit Singer Sewing Machine Models:
120U, 1191D200A, 1191D258A, 1191D300A, 1191D558A, 1591D200A, 1591D308A, 1591D200B, 1591D200G, 1591D210B, 1591D210G, 1591D240A, 1591D240B, 1591D240G, 1591D300A, 1591D300B, 1591D300G, 1591D310B, 1591D318B, 1591D310G, 291U, 391A1, 491D, 491D200GA, 491D300GA, 491G, 591D300A, 601, 691D