A Cork twist off!!
A "composite" cork twist-off cap for wine bottles.
Wow, this looks like a great little invention, other than the fact that bottles need to be made for it (which is somewhat major, but luckily, wine bottles are not re-usable (AFAIK).
it makes opening a bottle easier, and more "old-school" traditional than the common aluminum twist-off, and makes closing back bottle with a cork easier.
It looks like a composite cork, so it might not hold well (compared to true cork) for aging wines (even compared to aluminium twist off).