Speedy Inks - Dell Compatible C2660 C2660dn C2665dnf Set of 4 High Yield Toner Cartridges: 1 593BBBU Black, 1 593BBBT Cyan, 1 593BBBS Magenta, 1 593BBBR Yellow For use in Dell C2660dn and C2665dnf Printers Shelf Life: 24-36 Months Set Includes: Black 593BBBU, Cyan 593BBBT, Magenta 593BBBS, & Yellow 593BBBR 100% Satisfaction Guaranteed The use of aftermarket replacement cartridges and supplies does not void your printer's warranty