This 4 pack of ink cartridges is compatible with HP 910XL printers and provides high-quality prints with vivid colors and crisp text. The cartridges come in cyan, yellow, magenta, and black colors and have a yield of 825 pages at 5% coverage. These ink cartridges are made by Faslvink, a trusted brand in the market, and are designed to work seamlessly with HP OfficeJet Pro printers. The unit type is a compatible type and the model number is 910XL. The cartridges come with chips and are sold as a unit quantity.