Corkscrews are used both professionally and at hone to remove corks from wine bottles. The construction is typically the same for most of them, consisting of a pointed metal part that is attached to a handle of some kind. The metal point is on the end of a twisted metal piece that is twisted into the cork until it is firmly embedded and then the cork is pulled straight up and out of the mouth of the bottle.
Corks are very hard to remove without help from a corkscrew which is why they are so important in restaurants and bars as well as in your own kitchen. There are a few different styles of corkscrews you can choose from and those listed below will give you some variety to look at. All of them work well and would be welcome additions to your kitchen tools.