For use with Lexmark C522n, C524, C524n, C524dn, C524dtn printers. The Lexmark C52x supplies are designed to provide value, reliability & outstanding print quality. In most circumstances, the Lexmark C52X printers will prompt you to replace all 4 photoconductor units at the same time. For this reason, a 4 pack of photoconductors is offered. Single photoconductor units are also available. Yield: Up to 20, 000 images each. Contains 4 units.