Wirelesspug &copy; 4 Cartridge Pack HP 950 XL 951 XL Ink Cartridges For OfficeJet Pro 8600 8100 200 Black Color Printer brand new non-OEM (Non Original Equipment Manufacturer) Cartridges are sold in individually sealed packages Volume of ink is equal to OEM ISO 9001 Certified Manufacturer 60-Day Return Policy (See Description)