Items Description:- 100% Brand New High Quality- These Compatible cartridges deliver the preminum quality and reliability for your printer, they are not genuine ink cartridges.- Our cartridges are the highest quality and excellent printing result. Any defective cartridges will be 1:1 replaced.- All of cartridges with the latest version of chips installed already.- Each cartridge comes with 'plug and play' simplicity ready to be used.- Before ordering, please kindly ensure your printer and genuine cartridges models number are correct.100% Compatible with Printers:WorkForce Pro WF-7310WorkForce Pro WF-7820WorkForce Pro WF-7840WorkForce EC-C7000Package:2X Black Ink Cartridge1X Cyan Ink Cartridge1X Magenta Ink Cartridge1X Yellow Ink Cartridge