Hard to find, apparently. Purely aesthetic since I'll never fight anyone and most people just have guns in my state anyway.
Still, the only pair I can find is the same model from Karatemart or Kombativ. The brass knuckles with big ass, weighty, sharp points extending several inches. The beautiful tiger claw duster.
These things can't be hard to make. It's molded from one piece of metal. Who or what out there would make this same model, but with a supporting palm bar and perhaps with a steel finish?
Metalworkers... some company abroad? Help me out lol, these things are beautiful but it's hard to believe these things are only sold without palm support.