The V4ink Brand Toner Cartridges come in a pack of 3 and are compatible with HP printers. These cartridges use laser print technology and are designed to print in black color. Specifically designed for the HP 85a model, these cartridges are a cost-effective alternative to original HP cartridges, providing high-quality printing results at a fraction of the cost. Perfect for those looking to save on their printing expenses while maintaining the quality of their prints.