The genuine HP 305 is a standard capacity black ink cartridge that offers users cheapest way of getting their printer up and running. Designed to keep all compatible machines (like the HP Envy 6000) up and running to the highest standard, the 3YM61AE is a worthy purchase for any lucky owners of these printers.The 120 page yield of the HP 305XL black ink cartridge makes the cost per page surprisingly low for an original unit. Filled with 2ml of original black ink the Hewlett Packard 3YM61AE is guaranteed to give you the very best from your inkjet printer.