I noticed that the metal shrinker/stretcher for $179 is one unit, with the interchangeeable jaws. Then there is another stretcher/shrinker for $189, which is two units and there is no need to change the jaws, one is devoted to being a stretcher and one is a shrinker. Just curious which one would be better quality? I was thinking that the $179 one was actually better quality because it is basically only one unit, whereas the other one is two units.
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