Abstract: A bending machine comprises a plurality of bending units arranged to make bends in a common plane. The bending units are adjustably mounted to adjust the separation thereof in the common plane. Apparatus for holding and turning a workpiece about a predetermined axis is mounted between the bending units so that the predetermined axis is aligned or alignable with the common plane. The apparatus comprises a plurality of jaw members rotatable in unison about the predetermined axis. Each jaw member is axially open ended, has a central socket and a mouth extending from said socket to interrupt the periphery of the jaw member. The jaw members are interconnected and mounted to rotate in unison about the predetermined axis when at least one thereof is driven by a driving mechanism.