Compatible with SINGERR SLANT Sewing Machine Models: 266, 290,301,301A, 401, 401A, 404, 411, 431, 500, 501, 502, 600, 604, 610, 625, 626, 628, 630,631, 635, 635E, 636, 638, 639, 640, 645, 646, 649, 700, 706, 708 ,720, 721, 725, 729, 740, 746, 760, 766, 770, 784, 786, 900-3, 920-3, 1000, 1036 ,1050, 1100, 1410, 1411, 1425, 2000, 2000A, 2001, 2010, 4552, 4572, 4610, 4622, 5910, 6233 ,6234, 6235, 6267, 6268, 6740, 6800, 6900, 7028, 7033, 8019, 9005, 9008, 9010, 9012 ,9015, 9018, 9020, 9022, 9027, 9032,9117, 9123, 9133, 9135, 9137, 9143, 9210, 9217, 9224 ,9240, 9400, 9408, 9410, 9416, 9417, 9420, 9423, 9430, 9432, 9440 ,9444.