The DI-ACRO hand operated benders of the 1/1A/2/3/4 series are in fact multi-purpose machines used for various bending operations, for production of new (prototype) or duplicated parts with simple, compound or reverse bends, and can be used for different materials. They can successfully be used for angle, channel, rod wire, strip stock etc. They can also serve as die substitutes, offering usability for operations where dies are not an option. They can be ordered in 5 models, with bending up to 1" round mild steel bar, with the radius from 0 to 12". The model 4 has a selectable ratchet drive mechanism, offering power increase in situations with heavier and more robust materials.