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Singer Plastic Class 66 Bobbins
For Singer models 66, 99, 101, 185, 192, 201, 247, 288, 327, 328, 329, 401, 403, 404, 413, 416, 418, 457, 476, 477, 478, 500, 717, 719, 814, 834, series 6100, 6233, 6215, 6212, 6214 6500, 7100 and other drop-in machines. Not compatible with: Bernina, Elna, Husqvarna/Viking, Pfaff, Janome/New Home.