Compatible Printers: Phaser: 6510, 6510/DN, 6510/DNI, 6510/DNM, 6510/N & WorkCentre: 6515, 6515/DN, 6515/DNI, 6515/DNM, 6515/N Page Yield*: 5,500 per cartridgeFor best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. (*Average cartridge Page Yield* in accordance with ISO IEC 24711). *at 5% coverage (ISO/IEC standard) Professionally manufactured by Speedy Inks Color: Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.