For Singer Models 266, 290, Slant O Matic 301, 401, 411, 431, 500, 501, 502, 503, 503A, Touch & Sew 600, 603, 604, 610, 625, 626, 628, 629, 630, 631, 635, 636, 638, 639, 640, 645, 646, 649, 700, 706, 708, 714, 717, 719, 720, 721, 724, 725, 729, 734, 737, 740, 746, 750, 755, 756, 758, 760, 766, 770, 774, 775, 776, 778, 784, 786, Futura 900, 920, 1000, 1036, 1050, 1100, 1410, 1411, 1425, Athena 2000, 2005, Touch Tronic 2001, 2010, 4552, 4610, 4622, 5910 6233, 6234, 6235, 6267, 6268, 6740, 6800, 6900, 7028, 7033, 8019, 9005, 9008, 9010, 9012, 9015, 9018, 9020, 9022, 9027, 9032, 9123, 9133, 9135, 9137, 9143, 9210, 9217, 9224, 9240, 9400, 9408, 9410, 9416, 9417, 9420, 9423, 9430, 9432, 9440 & 9444 series and many more.