The rubber surface of the sticks is terrible ... From quality really can not be any question. The surface does not feel smooth to how the original stick, but rather coarse and even somewhat "slimy" to better ... I can not describe it, one can but summarized well in one word: "Sch * ISSE!"
Unfortunately, I was in my search, find no alternative for spare sticks, from the forth one has no choice but to buy here. However, I would rather pay twice for 2 higher quality sticks instead of the current price for 4, all of which are total rubbish!