Turning devices are used to rotate objects (containers, pipes, etc.) during processes such as welding, cutting, painting and positioning. They consist of two independent units: a drive unit and a free unit. Both units can be moved longitudinally. The drive unit is equipped with one or two driven wheels, while the other unit has free wheels. The ON-VV turning units serve the same purpose, but are designed for smaller loads and do not have the possibility of longitudinal movement.