1、Applicable for: Black and color ink cartridge set is suitable for OfficeJet Pro 7720, 7730, 7740, 8210, 8218, 8710, 8715, 8718, 8720, 8725, 8728, 8730, 8740 all in one printer, carefully check the model before use.  2、High Capacity: Each large black cartridge can print up to 825 pages and each small black and color cartridge can print up to 315 pages, ensures long term service.  3、Smoothly Printing: The ink cartridge can be widely used for photos, test papers etc., will print smoothly without blockage, with accurate position.  4、Colorfast: Built in excellent ink, these ink cartridges can print clear text and images that will last for many years without fading.  5、Multiple Applications: This set is suitable for hospital, school, government, trading company, financial company and more occasion, great for replacing damaged one.