JARBO 5 Color Compatible Replacement for HP 564XL Ink Cartridge 2 Sets+2 Black for HP Photosmart 5520 6520 7520 5510 6510 7510 7525 B8550 C6380 HP Premium C309A C410A HP Officejet 4620 HP Deskjet 3520 Easy to install and use with complete compatibility,High-quality ink, print with excellent color and crisp text. Contents:Compatible for HP 564 Ink Cartridges High Yield, 12 Packs(4 Black 2 Photo Black 2 Cyan 2 Magenta 2 Yellow), up to 800 pages per black cartridge, up to 750 pages per color cartridge (5% coverage). Compatible with HP Photosmart 5520 6520 7520 5510 6510 7510 5514 5515 7515 6515 7525 5525 C6380 C6350 D5460 D7560 B8550 HP Photosmart Premium C309A C410A C310A HP Officejet 4620 HP Deskjet 3520 3521 3522 Printer. ISO-9001 and MSDS certificate approved. All JARBO brand products are backed by 2 years money back guarantee, which covers any quality, reliability and performance issues We strive for the perfection of printing, only for the comfort in your life. HP Photosmart 5510,5512,5514,5515 HP Photosmart 5520,5525 HP Photosmart 6510,6512,6515 HP Photosmart 6520,6525 HP Officejet 4620 HP Officejet 4610 HP Officejet 4622 HP Deskjet 3520 HP Deskjet 3521 HP Deskjet 3522 <span class="a-text-bold">Step 1:</span> Please make cartridges upside down; <span class="a-text-bold">Step 2:</span> Please remove the protective clip before you install the ink cartridges ; Cleartext,the heater roller makes the printing smooth; With stable magnetic field, presenting gradual gradation without any background color. JARBO helps reduce your printing costs, save money 70%; high-value option for high-volume printing,up to 800 pages per black cartridge, up to 750 pages per color cartridge (5% coverage) Outstanding reliability, easy to install and use, rival the original in clear and stable printing; The productis built to ISO9001 and ISO14001 Factory Standards.