Incredible value: 4 remanufactured inkjet cartridges for HP 88XL. Compatible with: HP Officejet Pro K550 K550dtn K550dtwn printers. This 4 pack includes 1 x HP 88XL Black 1 x HP 88XL Cyan 1 x HP 88XL Magenta 1 x HP 88XL Yellow (all high capacity HP 88 inkjet cartridges remanufactured to the same specs as the original) Bought separately directly from HP you would pay $34.99 for the black and $24.99 for each of the 3 color cartridges total cost = $109.96. Buy this remanufactured pack of all 4 High Capacity HP 88XL cartridges and save significantly.