I have to agree with Kubur. This seems to be more than a tool to me. And not only is it a fancy scabbard for a tool, it has two rings to enable it to be carried as a sword as do the scabbards of other examples of this same weapon that we have seen. Obviously it has some specialized purpose given it's bizarre shape, but this wouldn't be the first odd sword form we have discussed on this forum, would it? I'm not convinced that this sword was meant for hamstringing horses. It seems a two-handed sword would be more useful for that task. But we have seen enough of these swords to know they are not simply a fanciful aberration. I agree that trying to understand it's purpose will be much more useful to this forum than simply writing off what we don't yet fully understand as simply being a tool.