Pliers come in many varieties. As a rule: large tongs for big trees, small pliers small trees. There are tongs with which you can cut branches. Whose cutting edge is straight or spherical. But there are also pliers to wire them to cut out a Bonsai.
Pliers have their own specific use.
The most commonly used pliers are the threaded rod and the jin-tang.
Pliers come in grades. There is black steel, stainless steel, hand-forged or manufactured by machine.