How many different sizes do rib based Cutters come in?

By Dave Wiecek; posted November 25, 2007

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I always thought these came in only one size and attributed any difference in the size of the opening to the annealing process. However, looking at this pair, the opening is noticeably different and the base is taller with more glass. Do these only come in 2 different sizes and is one more common than the other?

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