... shredding large and hard objects. 3.Such as metal,glass,wood,iron,steel,aluminum. Metal shredder GL61250 DescriptionAutomatic control by microcomputer (PC ... machine, shell of refrigerator, big size pipe, pipe fittings, forklift splint, tyres, packing barrel, vehicle body, aluminum, copper and steel less ... base of the Speed Reducer, big torque in low speed. Metal Shredder Machine/Heavy Duty Shredder