... ,glass,wood,iron,steel,aluminum. Metal shredder GL61250 DescriptionAutomatic control by microcomputer (PC), with functions of start, stop, reverse, overload ... of big torque in low speed, low noise. Convenient to change blade by split bearing block. Suitable for crushing the big solid ... after shredding.2.Rotor-knives is the single blade body by default. For double blade body or multi blade, please ...