Save and print even more when you shop with LD Products! This Item Includes: (1-Pack, Black) Remanufactured Ink Cartridge Replacement for HP 40 51640A . Why pay twice as much for brand name when our Compatible printer supplies deliver excellent quality results for a fraction of the price? Our Compatible cartridges for HP are backed by a 100% Satisfaction and Lifetime Guarantee. So stock up now and save even more! Enjoy the best prices on our top-rated ink cartridge replacements. Repeat Customers love our printer cartridges! Take advantage of even bigger savings when you shop high yield?ink cartridges that allow you to print more pages. Keep printing longer for a lower price. We offer printer cartridges for hard-to-find printer models. Our cartridges are good for?home, office or when you're running a business.?Our products are put through a rigorous testing process where?they are monitored for quality and reliability. Knowing the?ink cartridge that works?most efficiently with your printer model can save you a ton of money in the long run. Please note, retail packaging may vary and these cartridges will only work with printers purchased within the United States and Canada. The use of compatible cartridges does not void your printer's warranty and our cartridges are not manufactured by HP.