Page Yield*: 8,000 For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) These units are manufactured 100% brand new with all new parts including OPC drums, wiper blades, a smart chip and other internal parts, they are an economical alternative to expensive OEM 106R02228 Xerox laser compatible toner cartridges. Compatible with the following printers: Phaser 6600, Phaser 6600dn, Phaser 6600n, Phaser 6600ydn Workcentre 6605, Workcentre 6605dn & Workcentre 6605n Color: Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.