The Junkkari HJ 250 shredder, wood shredders designed in Finland Allowable diameter: Up to 250 mm (25 cm). Cutting System: Equipped with 4 knives on a heavy disc Operators on the tractor's PTO (PTO). Fed by hydraulic rollers and controlled by a "No-stress" type regulator to avoid logging of the trailer reinforced feed fall ideal for loading with crane or excavator