Feature: 1. [Suitable Models] The printer ink cartridges are applicable for OfficeJet 7720 7740, and for OfficeJet Pro 8210 8710 8720 8730 and other printers. 2. [BK C M Y 4 Colors] This printer ink cartridges set comes in 4 colors, black, cyan, magenta, and yellow. These colors meet your daily printing needs and with the smart chip, simple installation. 3. [High Page Capacity] Each large black cartridge is up to 825 pages and each small black and color cartridge is up to three hundred and fifteen pages and 5% coverage. 4. [Accurate Snap] The printer ink cartridge set produces fluent ink, allowing for clear printing, accurate snap, and no fading. 5. [Widespread Using]: Printer ink cartridges are suitable for printing photos, printing test papers, printing documents, suitable for use in factories, hospitals, schools, etc. Specification: Item Type: Printer Cartridge Product Material: PP Color: BK C M Y (Black, Cyan, Magenta, Yellow) Applicable Model: For OfficeJet 7720 7740, and for OfficeJet Pro 8210 8710 8720 8730 and other printers. Package List: 4 x Printer Ink Cartridge Note: Please do not tear the outlet film, the film will be automatically broken after successful installation.The printer should not be upgraded to the latest firmware, if it is upgraded to the latest firmware, the compatible chip may not be recognized.