Model Number: For HP 88 Printhead Color:Black and Yellow Magenta and Cyan OEM Part Number : C9381A - Black and Yellow C9382A - Magenta and Cyan Suitable with printer: For HP Officejet Pro K5400 K5400 tn K5400dn K5400dtn For HP Officejet Pro K550 K550dtn K550dtwn For HP Officejet Pro K8600 K8600dn For HP Officejet Pro L7480 For HP Officejet Pro L7550 L7580 L7590 For HP Officejet Pro L7650 L7680 For HP Officejet Pro L7750 L7780