This is a very well known collectible released back in 2009 with a collectible endoskull, sort of like the 3D in Europe and 4K in US was packaged with a replica of an endoarm. Only in this case the endoskull was a new sculpt done without any reference to the sceeenused material, while the endoarm was a faithful replica of the movie arm.
While the extras of the discs are really good and still not released on any other versions (Im talking about shorts), I have to admit Im not the fan of the skull itself. I understand for that price you cant expect too much, but Im not talking about the material, which is a very toy like silvery plastic, but an actual sculpt which is a very inaccurate one and looks to me much more like a gorilla skull.
It does look kind of cool from the side though
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