Electronically controlled automatic plant for the production of small and large sized stirrups, straightened cut-to-length bars and bent/shaped bars with bends at one or both ends, up to a length of 12m. The multi-wire prefeeding unit, combined with the 4th generation "MEP SYSTEM" straightening device, as well as the "SUPPLEMENTARY FEEDING" unit, guarantees the maximum flexibility and production quality with the 8 wire diameters which can be selected from the control unit. Thus the production can be input on the basis of two priorities: high production capabilities (for single diameters), or flexibility (for different diameters).