- Cartridges come filled with a new generation chip and work with all new printers. We offer a hassle free money back guarantee.- Compatible with Dell Laser printers: 1250c, 1350cnw, 1355cn, 1355w, 1355cnw, C1760nw, C1765nf, C1765nfw.- High capacity page yield: up to 2000 pages per black cartridge, 1400 per color cartridge. - All cartridges are backed by a 1 year returns policy, and are ISO9001 certified for cartridge quality and reliability, and ISO 14001 certified for environmental impact.- Contents: Compatible cartridges for 1200c series (2 Black).