MIROO 5 Color 564xl 564 XL Ink Cartridge High Yield (4 Black 2 Photo Black 2 Cyan 2 Magenta 2 Yellow),Work on Photosmart 5520 6520 6510 7510 7520 7515 C6380 C310a B8550 Officejet 4620 Deskjet 3520 Why choose MIROO: Leading company in New Technology for cartridges, focus on quality to provide best products to our customers, competitive price only 21% of the price of the major brands. Why pay more to have the same product and service? MIROO go. New version, not need Yellow tape. Use With: HP Photosmart 5510 5520 6520 6510 7510 7520 7515 C6380 C310a B8550 B8553 C5300 C5373 C5388 C6300 C6350 6383 D5445 D5468 C309 C510. High page yield: up to 800 pages per black cartridge & 750 pages per color cartridge (5% coverage). Include in the package: 4 black, 2 Cyan, 2 Magenta, 2 Yellow total 10 pack. Certified safe: MIROO is giving you the price, The quality but not only, for all of our products you will have 2 years guarantee. Customer satisfaction is the number 1 for our company. Our company insure fast shipment, work as well as the HP Version.