In my 20 years old, Wenger there was not so easily. Here had to play the Dremel. But after that it fits well here. It seems to me as if the thread pitch of the corkscrew knife Wenger has been aligned to acquisition of Victorinix.
Still 5 stars, because the product can not for my "abusive" use.
PS One thing I have not occurred: eyeglass wearers who want to follow suit so that her glasses screws, depending on the need prescription a Erstzbrille or contact lenses. (I'm not a spectacle wearer, so the problem I was not aware)