1x Black/Yellow - C9381A. 1x Cyan/Magenta - C9382A. Original HP 88 Set of Printheads. HP88 Set of two printheads Printer compatibility: HP Officejet Pro K5400 HP Officejet Pro K5400dn HP Officejet Pro K5400dtn HP Officejet Pro K5400dtwn HP Officejet Pro K5400n HP Officejet Pro K550 HP Officejet Pro K550dtn HP Officejet Pro K550dtwn HP Officejet Pro K8600 HP Officejet Pro K8600dn HP Officejet Pro L7480 HP Officejet Pro L7550 HP Officejet Pro L7555 HP Officejet Pro L7580 HP Officejet Pro L7590 HP Officejet Pro L7680 HP Officejet Pro L7700 HP Officejet Pro L7750 HP Officejet Pro L7780.
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