I find the big box stores have crap for tools anymore. Sears is getting there but at least you can find indiviual wrenches. Unless you wanta toritz.
Hinds has it right. One can often interchange the wrenches.
I often find a metric will work better on a slippy standard size nut. Unless it fits, it slips.
Or is it "unless it slips it fits?"
Jus' do it!
roadster with a stick