What is the purpose of Pliers?

James is this your homework ?? hope this helps you ............ Pliers are a hand tool used to hold objects firmly, possibly developed from tongs used to handle hot metal in Bronze Age Europe.[1] They are also useful for bending and compressing a wide range of materials. Generally, pliers consist of a pair of metal first-class levers joined at a fulcrum positioned closer to one end of the levers, creating short jaws on one side of the fulcrum, and longer handles on the other side.[1] This arrangement creates a mechanical advantage, allowing the force of the hand's grip to be amplified and focused on an object with precision. The jaws can also be used to manipulate objects too small or unwieldy to be manipulated with the fingers.

To grip a part rather than use your fingers, that whatever it is you are doing could injure yourself. A must have tool to have around.

They're so you can hold onto things that you can't hold onto with your fingers.

Universal wrench.