A straightening pass in an apparatus for straightening of elongated tubular or rod stock has a concave skew roll and a composite second skew roll located opposite the concave roll with reference to the center line of the pass. The second skew roll has a driven median section provided with two coaxial trunnions and two outer sections each of which has a disk eccentrically mounted on a trunnion and a stock-engaging ring which is rotatable on the respective disk. The disks are angularly adjustable on their trunnions and are adjustably coupled to a holder for the second skew roll. The rings can be rotated in response to rotation of the median section by providing them with internal gears which receive torque from gears provided on the respective trunnions.