E-Z Ink (TM) Compatible Toner Cartridge Replacement for Dell YK1PM 1160 331-7335 HF44N HF442 to Used with B1160 B1160w B1163w B1165nfw Mono Laser Printers (Black, 2 Pack) E-Z Ink compatible toner cartridges replacement for Dell YK1PM/1160 are manufactured in an ISO 9001 & ISO14001 certified facility. All toner cartridges are engineered to produce superb results. Package Contents: 2 x YK1PM/1160/331-7335 Black (Total 2 Pack) Page Yield: Black is 1,500 pages per cartridge at 5% coverage ($0.011 / page ONLY, Save up to 70% compared to OEM toner cartridge) Compatible Printers: Dell B1160, B1160w, B1163w, B1165nfw Laser Printers. Warranty & Support: E-Z Ink toner cartridge comes with 2-Year 100% Quality Guarantee / Shelf life: 24 months. Please contact Manufacturer E-Z Ink directly for any questions  Technical support, customer support is always online for you.