This genuine Hewlett Packard multipack contains one each of the HP 303 black and tri-colour ink cartridges.Containing 4ml of ink each, the HP 303 series are the standard capacity ink cartridges in the range. The top-quality genuine ink within the Hewlett Packard Z4B62EE ink cartridge multipack offers you over one hundred prints per cartridge according to Hewlett Packard, making this unit ideal for those who need to get their printer up and running.The standard capacity HP 303 range can be used in a variety of printers aimed at home users including the wonderful All-in-One Envy Photo 6230. Problems with genuine Hewlett Packard products are more than rare, but should you experience any problems the manufacturer offers a full guarantee for the Z4B62EE multipack directly.