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pliers 
Hand tools with two movable jaws of fixed or variable gaps, intended for gripping or clamping objects.
locking pliers
Used as pliers, wrench and vice, it has variable-gap jaws for gripping and clamping objects.
release lever
Lever for unlocking the pliers and releasing the grip.
rivet
Riveted assembly part that is the axle of articulation for the release lever.
toothed jaw
Striated straight or curved part that, with its twin, grasps or clamps an object.
adjusting screw
Screw regulating the jaws’ gap.
lever
The pressure of the adjusting screw raises or lowers it, thereby controlling the jaws’ gap.
spring
Tight when the handles are closed to lock the pliers, it resumes its shape when unlocked and the handles return to their initial position.
