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Generally, a corkscrew consists of a pointed metallic helix (often called the "worm") attached to a handle. The user grips the handle and screws the metal point into the cork, until the helix is firmly embedded, then a vertical pull on the corkscrew extracts the cork from the bottle





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Corkscrews are necessary because corks themselves, being small and smooth, are difficult to grip and remove, particularly when inserted fully into an inflexible glass bottle


The handle of the corkscrew, often a horizontal bar of wood attached to the screw, allows for a commanding grip to ease removal of the cork. Corkscrew handles may incorporate levers that further increase the amount of force that can be applied outwards upon the cork


Its design may have derived from the gun worm which was a device used by musketmen to remove unspent charges from a musket's barrel