For use with Lexmark C522n, C524, C524n, C524dn, C524dtn printers. The Lexmark C52x supplies are designed to provide value, reliability and 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.