premise: 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
hypothesis: I have to go home and get the bolt because I don't remember what size I need.