Compatible Printers: MS510dn, MS610de, MS610dn, MS610dte, MS610dtn Page Yield*: 20000 *Per Cartridge at 5% coverage (ISO/IEC standard) For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. per cartridge Professionally manufactured by Speedy Inks. Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.