Levers are one of the first machines ever conceived. A beam attached to a fulcrum can multiply force in surprising ways. There are 3 classes of levers, determined by the location of the fulcrum relative to the applied and resistance forces. Most bottle openers are considered class 2 levers because the resistance (the lip of the cap) is in between the fulcrum and applied force.
The Leverage bottle opener takes the usefulness of a bottle cap-sized class 2 lever and gives it a sleek new form. The result is an elegant and intriguing opener that you'll want to show off. It's a perfect example of applied physics!
This is the solid variant of the Leverage bottle opener. A patterned version is available here