HI-VISION Compatible Dell C2660dn / C2665dnf / 2660 High Capacity Black and Color Toner Cartridge Replacement (1 Black 593-BBBU, 1 Cyan 593-BBBT, 1 Yellow 593-BBBR, 1 Magenta 593-BBBS, 4 Pack) Premium Quality Replacement Toner Cartridge is made by ISO9001 Certified Factory to Meet OEM Standards 180 Days Money Back Guarantee 1 Year Manufacturer Warranty Against Product Defect Black: Up to 6,000 Pages at 5% Coverage; Color: Up to 4,000 Pages at 5% Coverage 1 Black, 1 Cyan, 1 Yellow, 1 Magenta