Pneumatics are very convenient Lego pieces: They are relatively strong (we
will see how much later), and relatively light. As such, they can be placed at
the extremity of an arm without problem (a motor might be to heavy). The hoses
being flexible, it is easy to position a pneumatic to your liking.
In order to use them efficiently, you should know your pneumatics with a
little more details. Here are some of the questions that will help you use