The 61XL High Capacity Ink Cartridge Combo Pack includes one black cartridge and one tri-color cartridge, providing a high page yield of 600 pages for black and 350 pages for color. These cartridges are compatible with various HP models such as OfficeJet Pro 2620, 4630, and DeskJet 1000, offering reliable and high-quality printing results. With a 2-year manufacturer warranty and fast shipping, this combo pack is suitable for use in offices, schools, and at home, ensuring a hassle-free printing experience.