Thanks... could anyone show pictures of these toorooms? I can't find any, but I'm rather curious.

Is it different from patas in else than size?
Other thing. How thick is the metal guard, and from what it is made? If it was tempered steel, I'd bet around 1.5-2mm, if it's mild, I think it would be around 3.5-4mm, or more, but this would double the weapon's weight.
Last thing. Taken from blade widht and lenght, most katars can be used for cutting and stabbing, while patas are thrust-only weapons, right?