ProPrint Compatible Dell C2660dn/C2665dnf (593-BBBU) Extra High Yield Black Toner Cartridge LIFE TIME WARRANTY - 100% Quality Guarantee for the life of the cartridge. Best Warranty in the Industry ProPrint Compatible Dell C2660 C2660dn C2665dnf Black Toner Cartridges are High Quality OEM Replacement Cartridges That Provide Up to 60% Savings Compared to the OEM Page Yield: 6,000 Pages Black Based on 5% Coverage All ProPrint Cartridges are Manufacture According to ISO 9001 and ISO 14001 Standards to ensure Quality and Performance Compatible with C2660dn, C2665dnf