This compatible cartridge replaces 106R03512 high yield black toner Page Yield*: 10,500 per unit For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. per unit. *at 5% coverage (ISO/IEC standard) Xerox is a registered trademark of Xerox Holdings Corporation and is not affiliated with and does not endorse LD Products Professionally manufactured by LD Products Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.