Number 1 a never said i was gonna hit anyone with them
That really doesn't enter into it. They're generally illegal, period.
Hitting someone with almost anything can elevate that object to the status of a "deadly weapon." Metallic knuckles are one of a handful of objects that get to be a "deadly weapon," de facto -- without the added impetus of your violent action needed to increase their "naughtyness."
number 2 they arent for me
Seeing as we don't know you, personally, outside of a screen name on a public forum, the statements given don't really apply to any specific "you". If you, personally, are finding this information for someone else, then consider our suggestions as applying only in general terms to you, personally. Rather, they apply directly to that third party, as yet un-named. So, if you see that other person, on whose behalf you're asking, please tell him or her, for us, that they're illegal. Mmmm'k?
Now that you are aware, and you will undoubtedly share that information with the person you're going to all this trouble for, do as RC said and Google your way to happiness. There are at least 821,001 sites that sell these. Usually they're right next to the blackjacks, saps, and billy clubs. If you scroll down as far as the nunchaku, shuriken, and those orthopedic ninja climbing shoes, you went too far.
Good luck on your quest!
-Sam