"Ah, So that's how it works! That's the origin of the name of the Ah, So cork remover a German invention first patented in the U.S in 1879. This new improved Rabbit version has a smoother operation. It removes all types of corks including plastic, but is especially recommended for vintage wines with fragile corks. It takes a little practice to learn how to use the Ah, So. But once you get the hang of it, you will be ah, so impressed. Keys Features and Benefits Includes faux leather case for storage Opens all types of corks including plastic"