Singer Sewing Machine Bobbins are perfect for Singer and other quality sewing machines. Class 66 Plastic 4pc- Models 288, 247, 360, 774, 935, 1022, 1280, 2210, 2517, 2732, 2950, 3270, 3343, 4325, 4610, 4622/22a, 4830, 5040, 5050, 5070, 5160, 5417, 5430, 5705, 5825, 5830, 5910, 6012, 6038, 6233, 7021, 8222, 8734, 9110, 9210, 9300, 9400, 9410, 9608, 9858, 57815, 57820, 57825, CG-500, CG-550, CG-590, HD110 and SR models 240, 250, 320, 350, 400, 500, 700, 800, 1800, 2500, 3100, 3300, 4500, 5800, 6100, 6200, 6500, 6700, 8000, 9000, 9800 and others.