Interesting implement

[mariusgmioc]

As Jens noted, the Katar in the original posting couldn't be effectively used as it would provide a completely inadequate grip.
However, I believe this Katar was never meant to be used.
Just by looking at the blade one can easily notice it doesn't appear to have an edge and strong tips suitable for stabbing.
So I am of the oppinion it is a purely decorative piece.