The DPBH-4 hydraulic bending rolls are available with roll diameters ranging from 280mm up to the large 680mm machines. The four roll design is extremely powerful, with three of the rolls hydraulically driven and the fourth lower roll hydraulically adjusted up and down to pinch the material into position. This feature greatly assists the operator, especially during multiple radius bending as the work piece is always held. All models have hydraulic drop end and are supplied with DRO to all three adjusting rolls to indicate roll position.