Pincers and Crow Bars
From DT Online
Pincers have two handles pivotted together to form two opposing Class 1 Levers. This configuration generates a Mechanical Advantage which enable their sharp jaws to grip tightly against a nail head for example. In addition, the curved shape of the jaws allows the whole tool to be rolled around in another Lever action to extract the nail (i.e. a similar action to that of a Claw Hammer)
Features and Applications
Note: When using Pincers, Claw Hammer or Pry Bar etc. to remove nails, scraps of wood can be used as shown to avoid damage to the timber - and/or thicker pieces used to get additional leverage.
From left to right below: