This item is not available in game.
The Brawler's Razor Claws was removed from the game when WoD launched. It will be making its reappearance in the Brawler's Guild quartermaster's available goods in Patch 6.1 as a 1-60 version.
Was waiting for more % xp heirlooms but i will love this if it was good enuf for transmog
Finally a fist weapon heirloom :)!
It's not unique so you can DH it as well. Interested in the looks though