Our Lexmark Ink Cartridge replacements for the Lexmark Z640 LA LV cartridges are designed and manufactured by an ISO-9001 facility and match Genuine Lexmark name-brand cartridges at a fraction of the cost. These Lexmark Z640 LA LV Ink Cartridges will provide optimal print quality and page yields. We've been selling products like compatible Lexmark Z640 LA LV Printer Ink Cartridges for over 13 years and think you'll find great value in comparison to the Lexmark OEM Z640 LA LV supplies.