1This is a professional print head that is compatible with a wide range of models 2This print head is smooth and stable, and the color is natural. It is a worthy print replacement that you deserve 3High quality ink with high degree of reduction and sufficient ink to save your cost 4The nozzle is polished, no paper jam, and the printing process is smooth 5The product is the original regeneration, the quality is guaranteed Features: 1. This is a professional print head that is compatible with a wide range of models. 2. This print head is smooth and stable, and the color is natural. It is a worthy print replacement that you deserve. 3. High quality ink with high degree of reduction and sufficient ink to save your cost. 4. The nozzle is polished, no paper jam, and the printing process is smooth. 5.The product is the original regeneration, the quality is guaranteed. Specification: Color: Magenta / Cyan, Black / Yellow, CMYK (Optional) Applicable models: for HP Offic jer PRO k5300 / k5400dn / k8600 / k8600dn / l7380 / L7580 / l7590lk5400dn / K5400dtn / K550 / K550dtn / K550dtwn / L7480 / L7680 / L7780 Size: 9.4 * 7 cm / 3.7 * 2.8in Weight: approx. 78-160gService Life: The service life of the product is one week ago (the ink in the print head is 8ML, and the printing is one cycle) Package List: 1 or 2 * Print HeadNote: Please remove the polishing cardboard nozzle and remove the orange rubber plug before installation.