This genuine HP 56 57 Ink Cartridge Combo is perfect for your HP7550 7660 Printer. The cartridges are OEM and have expired, but they are still compatible with your printer. The package includes two units of the ink cartridge, which are black in color and use tri-color technology. The cartridges are suitable for HP 5850 6105 models and come with a warning for CA buyers. The expiration date is not specified in the listing, but it is a new arrival. This product is ideal for those who need to print high-quality photos and documents with ease.