muratcangokce,
I like it, but with a couple of reservations. Because it attaches to just a single rod, the angle that it sits at depends on the diameter of the lens. This affects how easy it is to get to the knob that loosens or tightens it on the rods. On my setup, it typically means that the the tightening knob hits part of my baseplate, making it difficult to loosen or tighten it when changing lenses.
The other main issue is that mine had a fair bit of backlash in it. However, this video shows how to deal with it:
http://cheesycam.com/tightening-up-the- ... low-focus/Depending on how large your lens is, and how your camera sits on your baseplate, you may have no problem adjusting it. It's pretty hard to beat the price and overall quality, despite these small issues.