It doesn't have to be rubbish, it may play amazingly well, it just doesn't have a significant enough difference in composition between sides, so that you can perceive some difference in performance.Thanks Sergio, for confirming my "suspicions".
Serves me right for buying some cheap rubbish.
But I am being a bit hard here with my comment because it feels
and looks like a well made blade and in the right hand it could be a weapon.
It is faaaast on both sides and measures in at Hz 1615.