Property me 2 this cover additionally ordered, since they are intended to replace my SIGMA and Tamrondeckel. just the SIGMA cover unconvinced compared to the originals. One can relatively easily rotate it and thus generates plastic chips, which then falls naturally into the lens. The original Nikon cap have a fixed stop so that this can not happen. At Tamron lid I have not had any major problems, but if I wanted to replace all the same. Incidentally, Nikon has 2 versions of the cover. And this (I mean) would have to be the new and works very well. Sits firmly and can be well solved anyway.