These cartridges are compatible with the Dell593BBBU (black) cartridge. Our compatible cartridges are made with the highest quality materials and made at an ISO-9001 certified factory so you can expect premium quality printing. Laser Tek Services® Compatible Toner Cartridges offer an alternative to the expensive and over priced OEM toner cartridges. Compatible Cartridges are cheap, economical, and GREEN alternative for getting your printer up and running again! This product is compatible with the following printer models: Dell C2665dnf, Dell C2665dn.