These bobbins will fit the majority of Singer models including:
1306, 1408, 1409, 1507, 2250, 2259, 2263, 2273,2282, 8280, M1500, M2105, M2405, M2605, M320L, M3300, M3505, 3210, 3221, 3223, 3232, 3321, 3323, 3333, 3337, 3342, 4411, 4423, 4432, 4452, 5511, 5523, 5532, 7640, 9100
