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Old 08-25-2012, 07:10 PM
  #6  
J Miller
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Join Date: Feb 2012
Posts: 8,091
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Glenda,

They fit the Wheeler & Wilson #9 and the Singer 9W machines, amongst others. Instead of being flat on the sides like a regular Class 15 bobbin or a 221 / 301 bobbin, the sides are curved. The look just like a miniature bagel or donut.

Joe
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