Product The bobbin case is the part of the sewing machine that the bobbin is inserted into, and which holds the tension on the lower thread. The tension is adjustable via a screw on the side of the bobbin case. Be sure to use bobbins that are specifically designed to work with this bobbin case, as other bobbins will cause skipped stitches and can cause more problems for your sewing machine. Alternative part numbers: 421326-901, 421325-000, 421325, 421325-001, 421325003, 421325-002, 421325001, 421325-001DESCRIPTIONFits Singer Sewing Machine Models:1022, 1100, 1247, 1247N, 1250HD, 1263, 1263N, 1280, 1280N, 1288, 1288N, 1482, 1485, 1486, 1488, 1490, 1492, 1730, 1802, 1803, 1812, 1852, 1853, 1862, 1872, 1873, 2102, 2105, 2106, 2108, 2110, 2112, 2114, 2118, 2210, 2302, 2303, 2304, 2315, 2330, 2404, 2430, 2440, 247, 247AP, 2502, 2503, 2504, 2515, 2517, 2530, 2543, 257, 2712, 2718, 2722, 2724, 2730, 2732, 2808, 2818, 288, 2950 singer 421326 bobbin case Fits Singer Sewing Machine Models: 30920, 3100, 3101, 3102, 3103, 3105, 3130, 3140, 3270, 3314, 3317, 3343, 353, 354, 358, 4325, 4517, 4522, 4525, 4526, 4528, 4530, 4538, 4552, 4562, 4572, 4610, 4620, 4622, 4624, 4814, 4817, 4818, 4820, 4822, 4824, 4825, 4826, 4828, 4830, 4832, 495, 500K, 5017, 502, 5028, 5040, 5050, 507, 509, 510, 513, 514, 5160, 518, 522, 527, 530, 533, 534, 538, 5405, 5417, 543, 5430, 560, 5605, 5610, 5705, 5710, 57815, 57815C, 57817, 57820, 57820C, 57825, 5802, 5805, 5806, 5808, 5810, 5812, 5814, 5816, 5817, 5818, 5820, 5825, 5830, 5830C, 5838, 5910, 5932Detail Picture of Product-High QualitySinger Apollo Bobbin CaseFits Singer Machine Following Models6011, 6012, 6021, 6038, 6100, 6102, 6104, 6105, 6106, 6110, 6112, 6114, 6115, 6116, 6120, 6122, 6124, 6125, 6130, 6136, 6146, 6152, 6156, 6174, 6184, 6201, 6202, 6211, 6212, 6214, 6215, 6217, 6221, 6233, 6500, 6513, 6522, 6528, 6533, 6543, 6544, 6548, 6606, 6610, 6620, 6700 Series, 6705, 7004, 7015, 7021, 7025, 7028, 7029, 7033, 7035, 7100, 7101, 7102, 7104, 7105, 7106, 7108, 7110, 7136, 714, 717 School, 7174, 7184, 719, 7211, 7212, 724, 734, 774, 776, 800, 8002, 8007, 8019, 8100, 8200, 8220, 827, 830, 833, 834, 844, 8500, 8502, 8505, 8518, 8600, 8602, 8605, 8606, 8610, 8614, 8618, 8734, 8774, 8834, 9005, 9008, 9010, 9015, 9018, 9020, 9022, 9027, 9030, 9032, 9034, 9044, 9110, 9130, 9134, 9210, 93220, 9323, 93234, 9334, 935U, 9408, 9410, 9416, 9420, 9423, 9430, 9432, 9440, 9444, 9500, 9502, 9505, 9518, 9600, 9602, 9605, 9606, 9608, 9610, 9612, 9614, 9618, 964, 966, 968, 972, 974, 9802, 9803, 9805, 9806, 9808, 9810, 9812, 9814, 9816, 9818, 9824, 9828, 9836, 9858, 9936, CG500, CG550, CG590, CM17, CP17, DL17, DX14C, FM17, FM19, FM22, HD102, HD105, HD110