Page Yield: 5,000 per cartridge Shelf Life: 24-36 months per cartridge* at 5% coverage (ISO/IEC standard) These compatible toners come equipped with 100% brand new parts including an ink smart chip that accurately tracks your ink level Compatible with the following Xerox Phaser printers: 3250, 3250D, and 3250DN Color: Black The use of aftermarket replacement cartridges and supplies does not void your printer's warranty