This article was updated May 5, 2023. It was originally published Sept. 24, 2009. Shaft keys—sometimes called sunk keys—transmit torque between shafts and shaft-mounted components such as ...

The Anywhere Key is the first keys viewers see in Locke And Key revealed in the season 1 pilot, and it takes the user to anywhere they want to travel to, providing they have seen a door there ...

The Head Key One can access thoughts and memories using the Head Key, simply by inserting it into the back of the person's skull. Pretty nifty when you need some vital, code-breaking information.