Page Yield*: 2,600 For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) Compatible with: Kyocera-Mita ECOSYS M5521cdw & ECOSYS P5021cdw Deliver vivid, crisp text and graphics. Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.