Singer Plastic Class 66 Bobbins 2141. 

Set of 4 class 66 transparent plastic 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.     

CHK-2141