Friends say you if you really want to buy a car, then you have to buy the slack adjuster, I said what, he said you do not know the car is very difficult, so if you don’t buy slack adjuster, then certainly will not do, I also don’t know what my friend right, I at last in the car when he bought a slack adjuster, I think I heard my friend’s suggestion is right, because the car sometimes there is another problem, so I would think, if I really have that much to understand it also doesn’t know, what about slack adjuster, this thing is very small, but very useful, if not you will feel very trouble.