Check the listing for details. 10 Plastic Sewing drop-in Bobbins for Singer 66 Class. Condition: New. Listed at 3.50 USD. Brand New 10 Pieces of Plastic Drop-In Bobbins for Singer 66 Class, 99 Class, 200, 300, 400, 500, 700, 800 series and many more. Part Number 172336, 6965 or 172222P. The bobbin is curved (not flat), diameter 20.5mm, centre height 10.8mm.Singer models: 66, 99, 200, 300, 400, 500 series, 347, 714, 717, 719,734, 774, 776, 802, 807, 809, 813, 814, 818, 822, 824, 827, 833, 834, 838, 844, 935U, 1022, 1247, 1263, 1280, 1288, 1802, 1803, 1812, 1852, 1853, 1862, 1872, 1873, 2210, 2302, 2303, 2304, 2315, 2330, 2404, 2430, 2440, 2502, 2503, 2504, 2515, 2530, 2732, 2950, 3101, 3102, 3103, 3105, 3314, 3317, 3343, 4325, 4522, 4525, 4526, 4528, 4530, 4538, 4552, 4562, 4572, 4610, 4620, 4622, 4825, 4828, 4830, 5017, 5028, 5040, 5050, 5417, 5430, 5605, 5610, 5705, 5710, 5802, 5805, 5806, 5808, 5810, 5812, 5814, 5816, 5817, 5818, 5820, 5825, 5830, 5838, 5910, 5932, 6010, 6011, 6012, 6021, 6038, 6100, 6101, 6102, 6103, 6104, 6105, 6106, 6110, 6201, 6202, 6211, 6212, 6214, 6215, 6217, 6233, 6513, 6522, 6528, 6533, 6543, 6544, 6548, 6700, 7004, 7015, 7021, 7025, 7028, 7033, 7101, 7102, 7104, 7105, 7106, 7108, 7110, 7136, 7174, 7211, 7212, 8002, 8007, 8019, 8100, 8200, 8220, 8500, 8600, 8774, 9005, 9008, 9010, 9015, 9018, 9020, 9022, 9027, 9030, 9032, 9034, 9044, 9110, 9130, 9210, 9323, 9334, 9408, 9410, 9416, 9420, 9423, 9430, 9432, 9444, 9500, 9502, 9505, 9518, 9600, 9602, 9605, 9606, 9608, 9610, 9612, 9614, 9618, 9802-9836, 9936, 57817, 57820, 57825, CG500, CG550, CG590, DL17, DX-14C, FM17, FM22, and more. Bernina : 719 Brother : VX1005 Dressmaker : 300Z Necchi : 538 White : 8600, 8800