The Swiss Army Knife is one of the best options when it comes to a multi-purpose modular tool, but the A4 Tool Kit makes up for certain tools that Swiss Army Knives lack by necessity. In particular, the A4 Tool Kit is a single tool that can transform into both a hammer and a flashlight in seconds.
The modular design of the tool is simple. It comes with three parts: the handle, the light, and the hammer. Both the hammer and the flashlight pieces screw onto the handle quickly and can be stored in a small carrying case when not being used.
A hammer requires some size in order to function properly, yet the A4 Tool Kit still manages to remain relatively compact. Its name is take from the size of paper, A4, also known as letter paper, because the tool kit can fit on a piece of A4 stationery.