The adapter is quite firmly on the lens. He is a little heavier than normal as the great original from Cokin. Nevertheless, does that are clipped on and take off without problems. The Original Cokin P filters fit well in the 1 slot. Likewise, the circular pole filter.
But beware: It will only fit a Cokin P filter or the Round polarizing filter into the adapter. Both or 2 filter does not go. For this purpose, the greater adapter is needed. This is vignetierungsfrei from about 16-17mm focal length.
I had to use the same time hoped pole and graduated filters.
The delivery was very quick.