text: uh you know there 's something funny that i haven 't really resolved with metric i 've got to really go to the store and see if it 's true i can 't remember the size i think it 's uh eighteen or something like that i have a set of metric and and the old wrenches too and i think that 's an exact size of the three-quarters and they don 't make it in metric they just skip over it and it
  
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  I don 't remember the size .