The long handle on breaker bars compared to shorter wrenches allows a larger torque to be generated with the same amount of force.
A breaker bar is able to create a larger amount of rotational force compared to a standard socket wrench.
[4] Since the breaker bar creates and withstands a larger amount of torque it is often used in place of a standard socket wrench to break loose tight-fitting fasteners.
Because of its high yield strength and shock resistance, standard socket wrenches, and breaker bars are fashioned from this material.
In addition to its high yield strength, chromium-vanadium steel provides resistance to abrasion, oxidation, and corrosion making it a viable material for the production of tools.
A breaker bar creates a larger force due to the amount of torque that can be applied through a longer handle versus a shorter one.