It's been said that, while God may provide the ability and inspiration, it is not without men's hands that great works of art are produced. Similarly, no robot or automation system can assemble a product without pneumatic grippers.
There are two main types of pneumatic gripper: angular and parallel. The main difference between them is how their jaws move. The jaws of an angular gripper swing open and closed on pivots. The jaws of a parallel gripper slide open and closed in tracks. Either style can have two or three jaws. Jaw movement is usually synchronized, but some models can be modified so the jaws can move independently.