1PCS For 7145 420 421 500 501 OPC Drum Japan Photocopier Printer Cylinder Copier This OPC drum unit is designed for use in select photocopier and printer models including 7145, 420, 421, 500, and 501.Manufactured with components sourced from Japan, the cylinder supports consistent image transfer during printing operations.The unit is intended to integrate into compatible devices, providing performance for document reproduction tasks.