Vecoplan's line of low speed, high torque single shaft rotary shredders – the "New Generation" VAZ models – feature Cardan shaft drives, double sidewalls, reversible counter knives, hydraulic swing-up screen carriages, rotatable screens, and externally adjustable counter knives. VAZ shredders in the medium-duty group have hopper openings of 52 x58 in. to 70 x86 in. and hopper volumes from 3.75 cubic yards to 11 cubic yards. They can be used for any type of biomass, wood, plastics, paper, textiles, etc.