The HP 161X Original High Yield Laser Toner Cartridge in Black is specifically designed for use with HP LaserJet Pro 4006 and MFP 4112 printers. This high-quality toner cartridge ensures crisp and professional-looking black prints, making it an ideal choice for printing documents and images with precision and clarity. With a brand commitment from HP, you can trust that this cartridge will deliver reliable and consistent results every time.