I read reviews from amazon on this and some of them said it was poor quality. I don't think it is. I could see if you constantly take the lenses off and on it could wear the threads. It is made of a hard plastic. It clips nicely on the the front of the camera. I suggest getting one for each lens if you get the tele-converter and fish eye. It is much easier to take the lens off if you take the adapter off with them still connected.