Familiar with the Build Your Own Padlock Kit? This guy's nearly the same thing, only we did all the fun work for you, ya lazy bastards. But hey, it's still insanely fun to pick and you'll learn a ton with the exposed view inside of the lock.
Choosing a selection results in a full page refresh.
Press the space key then arrow keys to make a selection.
Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device