Genuine Xerox high-capacity print cartridges, engineered specifically for the PhaserTM 4500 printer, deliver extra savings on costs per print, with yields of up to 18,000 prints at 5% coverage. This longer-lasting toner cartridge is built for performance ? guaranteed to deliver crisp, clean text and images without interruption, and consistently make your work look its best. And, Xerox will recycle them free of charge through our Green World Alliance program.