Complete Set of Compatible Laser Toners replace Xerox 6600. 4 Packs, 1 Black 106R2228 , 1 Cyan 106R2225 , 1 Magenta 106R2226 , & 1 Yellow 106R2227 Page Yield: 8,000 Pages by the Black Toner & 6,000 Pages per Colour Toner @ Standard Coverage Rate of 5% on A4 Paper Size. Excellent printing quality and page yield matching the standards of OEM. For Xerox Phaser 6600 , 6600dn , 6600n , 6600ydn and WorkCentre 6605 , 6605n , 6605dn PRINTOXE® Brand 100% Compatible in Retail Package Shown in Image. Shelf Life exceeds 24 Months.