This HP 61X C8061X Black Toner Cartridge is designed for use with the HP LaserJet 4100 series printers. It is compatible with HP printers and provides high-quality printing in black color. The cartridge is easy to install and replace, making it a convenient choice for businesses and individuals who need to produce professional-looking documents. The toner cartridge comes in black color, which is perfect for printing text documents and graphics. It is made with high-quality materials and delivers consistent, reliable results every time. With this HP 61X C8061X Black Toner Cartridge, you can enjoy sharp, crisp text and images that look great on any paper type.