The HP CF287X 87X Black High Yield Toner is a genuine original product designed for HP Laser printers, specifically the LaserJet Enterprise M506 and MFP M527 models. With a high yield of 18,000 pages, this toner cartridge is perfect for businesses or individuals who require a large volume of black printing. The unit quantity is one box of toner cartridge, making it easy to install and providing consistent, high-quality printing results. Trust the HP brand for reliable print technology and compatibility with your HP printer model.