HP SA342AE combo pack inkjet print cartridges. Contains one no 56 black inkjet cartridge and one no 57 colour inkjet cartridge. Approximate page yields: black - 520, colour - 500. Printing with absolute clarity and precision, HP No. 56/57 Inkjet Cartridges are ideal for use in both the home and the office. Giving you results that will always please you, this cartridge makes the most of your important documents. Whether you are printing graphics, text or images, you will be amazed at the definition and eye-catching nature of your results. Inks are always kept separate guaranteeing that lines are sharp and colours are never murky.